{"header":{"numFound":52681282,"maxScore":1.0,"queryTime":943,"page":1,"pageSize":10},"results":[{"authors":[{"id":null,"fullName":"Marie, L. (L.)","name":"L.","surname":"Marie","rank":1,"pid":null},{"id":null,"fullName":"Burguete-Mas, F.J. (Francisco Javier)","name":"F. J.","surname":"Burguete-Mas","rank":2,"pid":null},{"id":null,"fullName":"Daviaud, F. (F.)","name":"F.","surname":"Daviaud","rank":3,"pid":null},{"id":null,"fullName":"Leorat, J. (J.)","name":"J.","surname":"Leorat","rank":4,"pid":null}],"openAccessColor":null,"publiclyFunded":null,"eoscIfGuidelines":null,"type":"other","language":{"code":"eng","label":"English"},"countries":null,"subjects":[{"subject":{"scheme":"FOS","value":"0103 physical sciences"},"provenance":null},{"subject":{"scheme":"FOS","value":"01 natural sciences"},"provenance":null}],"mainTitle":"Numerical study of homogeneous dynamo based on experimental von Kármán type flows","subTitle":null,"descriptions":["Abstract. A numerical study of the magnetic induction equation has been performed on von Kármán typeflows. These flows are generated by two co-axial counter-rotating propellers in cylindrical containers. Such devices are currently used in the von Kármán sodium (VKS) experiment designed to study dynamo action in an unconstrained flow. The mean velocity fields have been measured for different configurations and are introduced in a periodic cylindrical kinematic dynamo code. Depending on the driving configuration, on the poloidal to toroidal flow ratio and on the conductivity of boundaries, some flows are observed to sustain growing magnetic fields for magnetic Reynolds numbers accessible to a sodium experiment. The response of the flow to an external magnetic field has also been studied: The results are in excellent agreement with experimental results in the single propeller case but can differ in the two propellers case."],"publicationDate":"2003-01-01","publisher":null,"embargoEndDate":null,"sources":null,"formats":["application/pdf"],"contributors":["Repositorio de la Universidad de Navarra"],"coverages":null,"bestAccessRight":{"code":"c_abf2","label":"OPEN","scheme":"http://vocabularies.coar-repositories.org/documentation/access_rights/"},"container":null,"documentationUrls":null,"codeRepositoryUrl":null,"programmingLanguage":null,"contactPeople":null,"contactGroups":null,"tools":null,"size":null,"version":null,"geoLocations":null,"id":"00064aabbda9::005f2419c18fb2ec8b78b72d957b5db5","originalIds":["50|00064aabbda9::005f2419c18fb2ec8b78b72d957b5db5","oai:navarra.escire.net:10171/1599"],"pids":[{"scheme":"handle","value":"10171/1599"}],"dateOfCollection":null,"lastUpdateTimeStamp":null,"indicators":{"citationImpact":{"citationCount":0.0,"influence":2.193092E-9,"popularity":2.4598804E-10,"impulse":0.0,"citationClass":"C5","influenceClass":"C5","impulseClass":"C5","popularityClass":"C5"}},"projects":null,"organizations":null,"communities":null,"collectedFrom":[{"key":"openaire____::891381590337449b8dfd6259d4031ae1","value":"NAVARA SCIRE"}],"instances":[{"pids":[{"scheme":"handle","value":"10171/1599"}],"accessRight":{"code":"c_abf2","label":"OPEN","scheme":"http://vocabularies.coar-repositories.org/documentation/access_rights/","openAccessRoute":null},"type":"Other ORP type","urls":["https://hdl.handle.net/10171/1599"],"publicationDate":"2003-01-01","refereed":"nonPeerReviewed","hostedBy":{"key":"openaire____::891381590337449b8dfd6259d4031ae1","value":"NAVARA SCIRE"},"collectedFrom":{"key":"openaire____::891381590337449b8dfd6259d4031ae1","value":"NAVARA SCIRE"}}],"links":null,"otherTitles":null,"inDiamondJournal":null,"green":null,"isGreen":null,"isInDiamondJournal":null},{"authors":[{"id":null,"fullName":"Rodríguez-García, J.O. (Jesús Óscar)","name":"J. O.","surname":"Rodríguez-García","rank":1,"pid":null}],"openAccessColor":null,"publiclyFunded":null,"eoscIfGuidelines":null,"type":"other","language":{"code":"eng","label":"English"},"countries":null,"subjects":[{"subject":{"scheme":"keyword","value":"Flujos rotativos"},"provenance":null},{"subject":{"scheme":"FOS","value":"0103 physical sciences"},"provenance":null},{"subject":{"scheme":"keyword","value":"Cilindros cerrados"},"provenance":null},{"subject":{"scheme":"keyword","value":"Ciencias de la tierra y del espacio"},"provenance":null},{"subject":{"scheme":"FOS","value":"01 natural sciences"},"provenance":null},{"subject":{"scheme":"keyword","value":"Materias Investigacion::Ciencias de la tierra"},"provenance":null}],"mainTitle":"On the Instabilities Triggered in Rotating Flows in Closed Cylinders","subTitle":null,"descriptions":["En este trabajo principalmente experimental, se ha desarrollado un nuevo experimento para estudiar flujos rotativos. Este experimento consiste en un cilindro dividido en dos partes justo a media altura para dejar que cada parte rote independientemente. Para los datos experimentales obtenidos, el cilindro dividido en dos mitades está siempre en régimen corrotativo con una de las partes rotando un poco más rápido que la otra. Para la obtención del campo de velocidades experimental, se han usado técnicas ópticas no invasivas. El flujo medio e instantáneo han sido estudiados dentro del cilindro y comparados con la literatura cuando es posible. El foco principal se ha puesto en la zona de las capas límites donde las instabilidades pueden ocurrir ya que la rotación de fondo es suficientemente grande para tener el volumen interno en casi rotación de sólido rígido, confinando las inestabilidades, si es que hay, en las capas límites. Centrándose en la capa límite de la pared cilíndrica, se han encontrado estructuras con dependencia temporal en la componente acimutal del campo de velocidades, mientras que la capa tipo sándwich de Stewartson se ha encontrado en la componente axial. Más aún, se ha encontrado un forzado en el flujo en forma de ondas de Kelvin ya que la simetría del problema se rompe por un pequeño desalineamiento entre lados. Debido a que se realizan experimentos con una relación de aspectos donde el primer modo de Kelvin resuena, su contribución al flujo no se puede obviar. El modo de Kelvin encontrado crea un flujo de recirculación global y su comportamiento se ha descrito usando la teoría no viscosa y lineal. Se ha realizado un análisis modal del cilindro para encontrar modos que no se pueden observar directamente en el campo experimental de velocidades. Este análisis revela algunos modos y sus respectivas frecuencias y amplitudes. Se ha realizado una reconstrucción del flujo siguiendo la teoría no viscosa y lineal que corrobora la presencia de los modos encontrados. Por otro lado, se ha realizado una estancia predoctoral donde se ha estudiado un flujo experimental dentro de un cilindro en precesión. Este experimento ha mejorado el conocimiento de otra técnica experimental y de la teoría no viscosa. Los experimentos realizados se han comparado con otra teoría más reciente, viscosa y no lineal, encontrando una buena conexión."],"publicationDate":"2021-10-04","publisher":"Universidad de Navarra","embargoEndDate":null,"sources":null,"formats":["application/pdf"],"contributors":["Burguete-Mas, F.J. 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(G.)","name":"G.","surname":"Martin-Martin","rank":1,"pid":null},{"id":null,"fullName":"Aguilar, P.B. (P. B.)","name":"P. B.","surname":"Aguilar","rank":2,"pid":null},{"id":null,"fullName":"Barbes-Fernandez, B. (Benigno)","name":"B.","surname":"Barbes-Fernandez","rank":3,"pid":null},{"id":null,"fullName":"Azcona-Armendariz, J.D. (Juan Diego)","name":"J. D.","surname":"Azcona-Armendariz","rank":4,"pid":null}],"openAccessColor":null,"publiclyFunded":null,"eoscIfGuidelines":null,"type":"other","language":{"code":"eng","label":"English"},"countries":null,"subjects":[{"subject":{"scheme":"FOS","value":"0103 physical sciences"},"provenance":null},{"subject":{"scheme":"keyword","value":"Flattening filter free (FFF)"},"provenance":null},{"subject":{"scheme":"keyword","value":"Doses per pulse (DPP)"},"provenance":null},{"subject":{"scheme":"FOS","value":"01 natural sciences"},"provenance":null}],"mainTitle":"Accuracy of the recombination correction factor (ks) in FFF beams for three ion chamber types","subTitle":null,"descriptions":["Flattening filter free (FFF) beams pose particular considerations for absolute dosimetry. • These beams are capable to deliver high doses per pulse (DPP) which implies special consideration regarding recombination effects in ionization chambers. • We wanted to know which type of ionization chamber (Farmer, Semiflex or Pinpoint) would be more appropriate for commisioning our new FFF beam."],"publicationDate":"2018-01-01","publisher":"Elsevier BV","embargoEndDate":null,"sources":null,"formats":["application/pdf"],"contributors":["Repositorio de la Universidad de Navarra"],"coverages":null,"bestAccessRight":{"code":"c_abf2","label":"OPEN","scheme":"http://vocabularies.coar-repositories.org/documentation/access_rights/"},"container":null,"documentationUrls":null,"codeRepositoryUrl":null,"programmingLanguage":null,"contactPeople":null,"contactGroups":null,"tools":null,"size":null,"version":null,"geoLocations":null,"id":"00064aabbda9::02050f5867a91530b0072e52deed5bf2","originalIds":["50|00064aabbda9::02050f5867a91530b0072e52deed5bf2","oai:navarra.escire.net:10171/66175"],"pids":[{"scheme":"handle","value":"10171/66175"}],"dateOfCollection":null,"lastUpdateTimeStamp":null,"indicators":{"citationImpact":{"citationCount":0.0,"influence":2.193092E-9,"popularity":8.717022E-10,"impulse":0.0,"citationClass":"C5","influenceClass":"C5","impulseClass":"C5","popularityClass":"C5"}},"projects":null,"organizations":null,"communities":null,"collectedFrom":[{"key":"openaire____::891381590337449b8dfd6259d4031ae1","value":"NAVARA SCIRE"}],"instances":[{"pids":[{"scheme":"handle","value":"10171/66175"}],"accessRight":{"code":"c_abf2","label":"OPEN","scheme":"http://vocabularies.coar-repositories.org/documentation/access_rights/","openAccessRoute":null},"type":"Other ORP type","urls":["https://hdl.handle.net/10171/66175"],"publicationDate":"2018-01-01","refereed":"nonPeerReviewed","hostedBy":{"key":"openaire____::891381590337449b8dfd6259d4031ae1","value":"NAVARA SCIRE"},"collectedFrom":{"key":"openaire____::891381590337449b8dfd6259d4031ae1","value":"NAVARA SCIRE"}}],"links":null,"otherTitles":null,"inDiamondJournal":null,"green":null,"isGreen":null,"isInDiamondJournal":null},{"authors":[{"id":null,"fullName":"Arevalo, R. (Roberto)","name":"R.","surname":"Arevalo","rank":1,"pid":null},{"id":null,"fullName":"Montero, Á. (Ángel)","name":"Á","surname":"Montero","rank":2,"pid":null},{"id":null,"fullName":"Maza-Ozcoidi, D. (Diego)","name":"D.","surname":"Maza-Ozcoidi","rank":3,"pid":null}],"openAccessColor":null,"publiclyFunded":null,"eoscIfGuidelines":null,"type":"other","language":{"code":"eng","label":"English"},"countries":null,"subjects":[{"subject":{"scheme":"keyword","value":"Materias Investigacion::Física"},"provenance":null},{"subject":{"scheme":"FOS","value":"0103 physical sciences"},"provenance":null},{"subject":{"scheme":"FOS","value":"01 natural sciences"},"provenance":null}],"mainTitle":"Anomalous diffusion in silo drainage","subTitle":null,"descriptions":["The silo discharge process is studied by molecular dynamics simulations. The development of the velocity profile and the probability density function for the displacements in the horizontal and vertical axis are obtained. The PDFs obtained at the beginning of the discharge reveal non-Gaussian statistics and superdiffusive behaviors. When the stationary flow is developed, the PDFs at shorter temporal scales are non-Gaussian too. For big orifices a well-defined transition between ballistic and diffusive regime is observed. In the case of a small outlet orifice, no well-defined transition is observed. We use a nonlinear diffusion equation introduced in the framework of non-extensive thermodynamics in order to describe the movements of the grains. The solution of this equation gives a well-defined relationship ( = 2/(3 − q)) between the anomalous diffusion exponent and the entropic parameter q introduced by the non-extensive formalism to fit the PDF of the fluctuations."],"publicationDate":"2007-01-01","publisher":null,"embargoEndDate":null,"sources":null,"formats":["application/pdf"],"contributors":["Repositorio de la Universidad de Navarra"],"coverages":null,"bestAccessRight":{"code":"c_abf2","label":"OPEN","scheme":"http://vocabularies.coar-repositories.org/documentation/access_rights/"},"container":null,"documentationUrls":null,"codeRepositoryUrl":null,"programmingLanguage":null,"contactPeople":null,"contactGroups":null,"tools":null,"size":null,"version":null,"geoLocations":null,"id":"00064aabbda9::0432b468edd35c10e89e0d2b8e302dbc","originalIds":["50|00064aabbda9::0432b468edd35c10e89e0d2b8e302dbc","oai:navarra.escire.net:10171/1754"],"pids":[{"scheme":"handle","value":"10171/1754"}],"dateOfCollection":null,"lastUpdateTimeStamp":null,"indicators":{"citationImpact":{"citationCount":0.0,"influence":2.193092E-9,"popularity":3.019524E-10,"impulse":0.0,"citationClass":"C5","influenceClass":"C5","impulseClass":"C5","popularityClass":"C5"}},"projects":null,"organizations":null,"communities":null,"collectedFrom":[{"key":"openaire____::891381590337449b8dfd6259d4031ae1","value":"NAVARA SCIRE"}],"instances":[{"pids":[{"scheme":"handle","value":"10171/1754"}],"accessRight":{"code":"c_abf2","label":"OPEN","scheme":"http://vocabularies.coar-repositories.org/documentation/access_rights/","openAccessRoute":null},"type":"Other ORP type","urls":["https://hdl.handle.net/10171/1754"],"publicationDate":"2007-01-01","refereed":"nonPeerReviewed","hostedBy":{"key":"openaire____::891381590337449b8dfd6259d4031ae1","value":"NAVARA SCIRE"},"collectedFrom":{"key":"openaire____::891381590337449b8dfd6259d4031ae1","value":"NAVARA SCIRE"}}],"links":null,"otherTitles":null,"inDiamondJournal":null,"green":null,"isGreen":null,"isInDiamondJournal":null},{"authors":[{"id":null,"fullName":"Gella, D. (Diego)","name":"D.","surname":"Gella","rank":1,"pid":null}],"openAccessColor":null,"publiclyFunded":null,"eoscIfGuidelines":null,"type":"other","language":{"code":"eng","label":"English"},"countries":null,"subjects":[{"subject":{"scheme":"keyword","value":"Materias Investigacion::Física"},"provenance":null},{"subject":{"scheme":"FOS","value":"0103 physical sciences"},"provenance":null},{"subject":{"scheme":"FOS","value":"01 natural sciences"},"provenance":null}],"mainTitle":"Flow and clogging in a granular silo discharged with a conveyor belt","subTitle":null,"descriptions":["El flujo de medios granulares en la descarga de silos es un problema ampliamente estudiado desde hace años debido a sus aplicaciones en la industria o la agricultura. Recientemente, el estudio de los atascos, que dan lugar a la detención del flujo como consecuencia de la formación de arcos encima del orificio, ha recibido también la atención de la comunidad científica. A lo largo de los años, los dos problemas se han investigado en silos en los que el material es descargado únicamente por medio de la gravedad, régimen que llamamos descarga libre . En ese caso, la velocidad de las partículas está determinada por el tamaño del agujero de salida. Con el objetivo de investigar el efecto de ambas variables por separado, se ha utilizado una cinta transportadora que descarga el material, permitiendo controlar la velocidad de las partículas de forma independiente al tamaño de agujero. La caracterización del flujo se ha determinado a partir del análisis de grabaciones en alta velocidad de las descargas en la zona del orificio. Variando el tamaño de agujero y la velocidad de extracción de la cinta, los patrones de flujo en el agujero se han comparado con el régimen de descarga libre. De hecho, inicialmente, las dependencias del flujo y de los perfiles de densidad y velocidad con el tamaño de agujero para el caso de la descarga libre, jan sido interpretados a la luz de las expresiones propuestas recientemente. En los experimentos con la cinta se observa un comportamiento diferente, caracterizado por i) un incremento y posterior saturación de la velocidad de las partículas con la velocidad de la cinta; y ii) una reducción de la velocidad de las partículas con el tamaño de agujero si la velocidad de la cinta se mantiene constante. Estas dependencias se explican por medio de un modelo basado en la conservación de la masa. Además, tanto los valores del flujo como los de las velocidades de las partículas se han relacionado con la dinámica que se observa en el interior del silo, gracias al análisis de la micromecánica. Asimismo, la introducción de la cinta ocasiona un movimiento intermitente de las partículas que es especialmente visible para velocidades de extracción bajas. Este comportamiento se ha estudiado por medio del análisis multifractal de una señal temporal que caracteriza la velocidad de las partículas en cada momento, y también a partir de la correlación espacial entre las velocidades de las partículas. De esta manera se han encontrado cuatro tipos de flujo diferentes dependiendo de la velocidad de la cinta y del tamaño de agujero. Finalmente, el fenómeno de atasco se ha estudiado a partir del análisis de los tamaños de avalanchas definidos como el número de granos que salen del silo desde que se rompe un atasco hasta que se forma el siguiente. El protocolo de medida está automatizado y consiste en la sincronización de la cinta y otros dispositivos encargados de detectar los arcos, romperlos y registrar la masa de las avalanchas. A partir de las distribuciones de los tamaños de avalancha, se han calculado las probabilidades de atasco para tres agujeros distintos y varias velocidades de la cinta. Como resultado, se ha observado una fuerte influencia de la cinemática en el proceso de atasco: en el mejor de los casos, se ha obtenido un cambio en la probabilidad de atasco de alrededor de dos órdenes de magnitud al cambiar la velocidad de la cinta. Este comportamiento se ha explicado usando nuevas ecuaciones, que están inspiradas en otras que ya se utilizan para describir los atascos en la descarga libre. Estas expresiones incluyen solamente dos parámetros: uno geométrico, que determina la probabilidad de atasco cuando la velocidad de las partículas es mínima, y otro que recoge la influencia de la velocidad de las partículas. Con esto se logra describir separadamente los efectos geométrico y cinemático en el proceso de atasco."],"publicationDate":"2020-03-18","publisher":null,"embargoEndDate":null,"sources":null,"formats":["application/pdf"],"contributors":["Zuriguel-Ballaz, I. (Iker)","Repositorio de la Universidad de Navarra"],"coverages":null,"bestAccessRight":{"code":"c_abf2","label":"OPEN","scheme":"http://vocabularies.coar-repositories.org/documentation/access_rights/"},"container":null,"documentationUrls":null,"codeRepositoryUrl":null,"programmingLanguage":null,"contactPeople":null,"contactGroups":null,"tools":null,"size":null,"version":null,"geoLocations":null,"id":"00064aabbda9::046d2bc209c1bce0326b5e9498f0fb4b","originalIds":["oai:navarra.escire.net:10171/58894","50|00064aabbda9::046d2bc209c1bce0326b5e9498f0fb4b"],"pids":[{"scheme":"handle","value":"10171/58894"}],"dateOfCollection":null,"lastUpdateTimeStamp":null,"indicators":{"citationImpact":{"citationCount":0.0,"influence":2.193092E-9,"popularity":1.1312192E-9,"impulse":0.0,"citationClass":"C5","influenceClass":"C5","impulseClass":"C5","popularityClass":"C5"}},"projects":null,"organizations":null,"communities":null,"collectedFrom":[{"key":"openaire____::891381590337449b8dfd6259d4031ae1","value":"NAVARA SCIRE"}],"instances":[{"pids":[{"scheme":"handle","value":"10171/58894"}],"accessRight":{"code":"c_abf2","label":"OPEN","scheme":"http://vocabularies.coar-repositories.org/documentation/access_rights/","openAccessRoute":null},"type":"Other ORP type","urls":["https://hdl.handle.net/10171/58894"],"publicationDate":"2020-03-18","refereed":"nonPeerReviewed","hostedBy":{"key":"openaire____::891381590337449b8dfd6259d4031ae1","value":"NAVARA SCIRE"},"collectedFrom":{"key":"openaire____::891381590337449b8dfd6259d4031ae1","value":"NAVARA SCIRE"}}],"links":null,"otherTitles":null,"inDiamondJournal":null,"green":null,"isGreen":null,"isInDiamondJournal":null},{"authors":[{"id":null,"fullName":"Pelacho, M.A. (M.A.)","name":"M. A.","surname":"Pelacho","rank":1,"pid":null},{"id":null,"fullName":"Montero, Á. (Ángel)","name":"Á","surname":"Montero","rank":2,"pid":null},{"id":null,"fullName":"Burguete-Mas, F.J. (Francisco Javier)","name":"F. J.","surname":"Burguete-Mas","rank":3,"pid":null}],"openAccessColor":null,"publiclyFunded":null,"eoscIfGuidelines":null,"type":"other","language":{"code":"eng","label":"English"},"countries":null,"subjects":[{"subject":{"scheme":"keyword","value":"Materias Investigacion::Física"},"provenance":null},{"subject":{"scheme":"FOS","value":"0103 physical sciences"},"provenance":null},{"subject":{"scheme":"FOS","value":"01 natural sciences"},"provenance":null}],"mainTitle":"Local Marangoni number at the onset of hydrothermal waves","subTitle":null,"descriptions":["We report the results of an experiment in which a layer of fluid, placed in a container open to the air, is subjected to a horizontal temperature difference DT. The fluid height h is kept constant and both the horizontal temperature difference and the horizontal dimensions of the fluid layer are changed. In this configuration, when DT goes beyond a certain threshold, waves propagating from the cold to the hot side appear ~hydrothermal waves! with a determined group velocity. We study the influence of the container geometry on these waves. Close to the threshold, they are spatially localized near the hot side and a local Marangoni number is defined to describe this behavior. If DT is further increased, the waves fill the whole fluid layer. We also find an agreement between our experimental results and theoretical works and simulations."],"publicationDate":"2000-01-01","publisher":"American Physical Society (APS)","embargoEndDate":null,"sources":null,"formats":["application/pdf"],"contributors":["Repositorio de la Universidad de Navarra"],"coverages":null,"bestAccessRight":{"code":"c_abf2","label":"OPEN","scheme":"http://vocabularies.coar-repositories.org/documentation/access_rights/"},"container":null,"documentationUrls":null,"codeRepositoryUrl":null,"programmingLanguage":null,"contactPeople":null,"contactGroups":null,"tools":null,"size":null,"version":null,"geoLocations":null,"id":"00064aabbda9::068b16034016a81b75928359cd804622","originalIds":["oai:navarra.escire.net:10171/1995","50|00064aabbda9::068b16034016a81b75928359cd804622"],"pids":[{"scheme":"handle","value":"10171/1995"}],"dateOfCollection":null,"lastUpdateTimeStamp":null,"indicators":{"citationImpact":{"citationCount":0.0,"influence":2.193092E-9,"popularity":2.2218992E-10,"impulse":0.0,"citationClass":"C5","influenceClass":"C5","impulseClass":"C5","popularityClass":"C5"}},"projects":null,"organizations":null,"communities":null,"collectedFrom":[{"key":"openaire____::891381590337449b8dfd6259d4031ae1","value":"NAVARA SCIRE"}],"instances":[{"pids":[{"scheme":"handle","value":"10171/1995"}],"accessRight":{"code":"c_abf2","label":"OPEN","scheme":"http://vocabularies.coar-repositories.org/documentation/access_rights/","openAccessRoute":null},"type":"Other ORP type","urls":["https://hdl.handle.net/10171/1995"],"publicationDate":"2000-01-01","refereed":"nonPeerReviewed","hostedBy":{"key":"openaire____::891381590337449b8dfd6259d4031ae1","value":"NAVARA SCIRE"},"collectedFrom":{"key":"openaire____::891381590337449b8dfd6259d4031ae1","value":"NAVARA SCIRE"}}],"links":null,"otherTitles":null,"inDiamondJournal":null,"green":null,"isGreen":null,"isInDiamondJournal":null},{"authors":[{"id":null,"fullName":"Petrelis, F. 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F.","surname":"Pinton","rank":9,"pid":null}],"openAccessColor":null,"publiclyFunded":null,"eoscIfGuidelines":null,"type":"other","language":{"code":"eng","label":"English"},"countries":null,"subjects":[{"subject":{"scheme":"FOS","value":"0103 physical sciences"},"provenance":null},{"subject":{"scheme":"FOS","value":"01 natural sciences"},"provenance":null}],"mainTitle":"Nonlinear magnetic induction by helical motion in a liquid sodium turbulent flow","subTitle":null,"descriptions":["We report an experimental study of the magnetic field ~BB induced by a turbulent swirling flow of liquid sodium submitted to a transverse magnetic field ~BB0. We show that the induced field can behave nonlinearly as a function of the magnetic Reynolds number, Rm. At low Rm, the induced mean field along the axis of the flow, hBxi, and the one parallel to ~BB0, hByi, first behave like R2 m, whereas the third component, hBzi, is linear in Rm. The sign of hBxi is determined by the flow helicity. At higher Rm, ~BB strongly depends on the local geometry of the mean flow: hBxi decreases to zero in the core of the swirling flow but remains finite outside. We compare the experimental results with the computed magnetic induction due to the mean flow alone."],"publicationDate":"2003-01-01","publisher":null,"embargoEndDate":null,"sources":null,"formats":["application/pdf"],"contributors":["Repositorio de la Universidad de Navarra"],"coverages":null,"bestAccessRight":{"code":"c_abf2","label":"OPEN","scheme":"http://vocabularies.coar-repositories.org/documentation/access_rights/"},"container":null,"documentationUrls":null,"codeRepositoryUrl":null,"programmingLanguage":null,"contactPeople":null,"contactGroups":null,"tools":null,"size":null,"version":null,"geoLocations":null,"id":"00064aabbda9::06eea10b7914b0037a9d5507da5289bb","originalIds":["oai:navarra.escire.net:10171/1598","50|00064aabbda9::06eea10b7914b0037a9d5507da5289bb"],"pids":[{"scheme":"handle","value":"10171/1598"}],"dateOfCollection":null,"lastUpdateTimeStamp":null,"indicators":{"citationImpact":{"citationCount":0.0,"influence":2.193092E-9,"popularity":2.4598804E-10,"impulse":0.0,"citationClass":"C5","influenceClass":"C5","impulseClass":"C5","popularityClass":"C5"}},"projects":null,"organizations":null,"communities":null,"collectedFrom":[{"key":"openaire____::891381590337449b8dfd6259d4031ae1","value":"NAVARA SCIRE"}],"instances":[{"pids":[{"scheme":"handle","value":"10171/1598"}],"accessRight":{"code":"c_abf2","label":"OPEN","scheme":"http://vocabularies.coar-repositories.org/documentation/access_rights/","openAccessRoute":null},"type":"Other ORP type","urls":["https://hdl.handle.net/10171/1598"],"publicationDate":"2003-01-01","refereed":"nonPeerReviewed","hostedBy":{"key":"openaire____::891381590337449b8dfd6259d4031ae1","value":"NAVARA SCIRE"},"collectedFrom":{"key":"openaire____::891381590337449b8dfd6259d4031ae1","value":"NAVARA SCIRE"}}],"links":null,"otherTitles":null,"inDiamondJournal":null,"green":null,"isGreen":null,"isInDiamondJournal":null},{"authors":[{"id":null,"fullName":"Iván, S. (Sánchez)","name":"S.","surname":"Iván","rank":1,"pid":null},{"id":null,"fullName":"Gustavo, G. (Gutierrez)","name":"G.","surname":"Gustavo","rank":2,"pid":null},{"id":null,"fullName":"Zuriguel-Ballaz, I. (Iker)","name":"I.","surname":"Zuriguel-Ballaz","rank":3,"pid":null},{"id":null,"fullName":"Maza-Ozcoidi, D. (Diego)","name":"D.","surname":"Maza-Ozcoidi","rank":4,"pid":null}],"openAccessColor":null,"publiclyFunded":null,"eoscIfGuidelines":null,"type":"other","language":{"code":"eng","label":"English"},"countries":null,"subjects":[{"subject":{"scheme":"FOS","value":"0103 physical sciences"},"provenance":null},{"subject":{"scheme":"FOS","value":"01 natural sciences"},"provenance":null}],"mainTitle":"Sinking of light intruders in a shaken granular bed","subTitle":null,"descriptions":["We present an experimental study of the displacement of a light intruder immersed in a vibrated granular bed. Using high speed video we resolve the motion, during one cycle of oscillation, of a cylindrical object inside a Plexiglas box partially filled with grains. We report experimental evidence that, in the absence of convection, at least two forces are behind the intruder’s motion: an air drag force—due to the airflow through the granular bed—and a buoyancy force produced by an air-mediated granular fluid."],"publicationDate":"2010-06-23","publisher":null,"embargoEndDate":null,"sources":null,"formats":["application/pdf"],"contributors":["Repositorio de la Universidad de Navarra"],"coverages":null,"bestAccessRight":{"code":"c_abf2","label":"OPEN","scheme":"http://vocabularies.coar-repositories.org/documentation/access_rights/"},"container":null,"documentationUrls":null,"codeRepositoryUrl":null,"programmingLanguage":null,"contactPeople":null,"contactGroups":null,"tools":null,"size":null,"version":null,"geoLocations":null,"id":"00064aabbda9::0800521223417f87161e84ef1891051d","originalIds":["oai:navarra.escire.net:10171/7416","50|00064aabbda9::0800521223417f87161e84ef1891051d"],"pids":[{"scheme":"handle","value":"10171/7416"}],"dateOfCollection":null,"lastUpdateTimeStamp":null,"indicators":{"citationImpact":{"citationCount":0.0,"influence":2.193092E-9,"popularity":3.7489015E-10,"impulse":0.0,"citationClass":"C5","influenceClass":"C5","impulseClass":"C5","popularityClass":"C5"}},"projects":null,"organizations":null,"communities":null,"collectedFrom":[{"key":"openaire____::891381590337449b8dfd6259d4031ae1","value":"NAVARA SCIRE"}],"instances":[{"pids":[{"scheme":"handle","value":"10171/7416"}],"accessRight":{"code":"c_abf2","label":"OPEN","scheme":"http://vocabularies.coar-repositories.org/documentation/access_rights/","openAccessRoute":null},"type":"Other ORP type","urls":["https://hdl.handle.net/10171/7416"],"publicationDate":"2010-06-23","refereed":"nonPeerReviewed","hostedBy":{"key":"openaire____::891381590337449b8dfd6259d4031ae1","value":"NAVARA SCIRE"},"collectedFrom":{"key":"openaire____::891381590337449b8dfd6259d4031ae1","value":"NAVARA SCIRE"}}],"links":null,"otherTitles":null,"inDiamondJournal":null,"green":null,"isGreen":null,"isInDiamondJournal":null},{"authors":[{"id":null,"fullName":"Chen, S. 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(P.)","name":"P.","surname":"Mora","rank":7,"pid":null}],"openAccessColor":null,"publiclyFunded":null,"eoscIfGuidelines":null,"type":"other","language":{"code":"eng","label":"English"},"countries":null,"subjects":[{"subject":{"scheme":"keyword","value":"Granular flow"},"provenance":null},{"subject":{"scheme":"FOS","value":"0103 physical sciences"},"provenance":null},{"subject":{"scheme":"keyword","value":"Materias Investigación: Física y Matemática aplicada"},"provenance":null},{"subject":{"scheme":"keyword","value":"Pedestrian flow"},"provenance":null},{"subject":{"scheme":"FOS","value":"01 natural sciences"},"provenance":null}],"mainTitle":"Scaling laws in granular flow and pedestrian flow","subTitle":null,"descriptions":["We use particle-based simulations to examine the flow of particles through an exit. Simulations involve both gravity-driven particles (representing granular material) and velocity-driven particles (mimicking pedestrian dynamics). Contact forces between particles include elastic, viscous, and frictional forces; and simulations use bunker geometry. Power laws are observed in the relation between flow rate and exit width. Simulations of granular flow showed that the power law has little dependence on the coefficient of friction. Polydisperse granular systems produced higher flow rates than those produced by monodisperse ones. We extend the particle model to include the main features of pedestrian dynamics: thoracic shape, shoulder rotation, and desired velocity oriented towards the exit. Higher desired velocity resulted in higher flow rate. Granular simulations always give higher flow rate than pedestrian simulations, despite the values of aspect ratio of the particles. In terms of force distribution, pedestrians and granulates share similar properties with the non-democratic distribution of forces that poses high risks of injuries in a bottleneck situation."],"publicationDate":"2013-01-01","publisher":"AIP Publishing","embargoEndDate":null,"sources":null,"formats":["application/pdf"],"contributors":["Repositorio de la Universidad de Navarra"],"coverages":null,"bestAccessRight":{"code":"c_abf2","label":"OPEN","scheme":"http://vocabularies.coar-repositories.org/documentation/access_rights/"},"container":null,"documentationUrls":null,"codeRepositoryUrl":null,"programmingLanguage":null,"contactPeople":null,"contactGroups":null,"tools":null,"size":null,"version":null,"geoLocations":null,"id":"00064aabbda9::08b03635ce107f4823aa2022b72f78f7","originalIds":["50|00064aabbda9::08b03635ce107f4823aa2022b72f78f7","oai:navarra.escire.net:10171/29667"],"pids":[{"scheme":"handle","value":"10171/29667"}],"dateOfCollection":null,"lastUpdateTimeStamp":null,"indicators":{"citationImpact":{"citationCount":0.0,"influence":2.193092E-9,"popularity":4.9276294E-10,"impulse":0.0,"citationClass":"C5","influenceClass":"C5","impulseClass":"C5","popularityClass":"C5"}},"projects":null,"organizations":null,"communities":null,"collectedFrom":[{"key":"openaire____::891381590337449b8dfd6259d4031ae1","value":"NAVARA SCIRE"}],"instances":[{"pids":[{"scheme":"handle","value":"10171/29667"}],"accessRight":{"code":"c_abf2","label":"OPEN","scheme":"http://vocabularies.coar-repositories.org/documentation/access_rights/","openAccessRoute":null},"type":"Other ORP type","urls":["https://hdl.handle.net/10171/29667"],"publicationDate":"2013-01-01","refereed":"nonPeerReviewed","hostedBy":{"key":"openaire____::891381590337449b8dfd6259d4031ae1","value":"NAVARA SCIRE"},"collectedFrom":{"key":"openaire____::891381590337449b8dfd6259d4031ae1","value":"NAVARA SCIRE"}}],"links":null,"otherTitles":null,"inDiamondJournal":null,"green":null,"isGreen":null,"isInDiamondJournal":null},{"authors":[{"id":null,"fullName":"Mancini-Maza, H. L. (Hector Luis)","name":"H. L.","surname":"Mancini-Maza","rank":1,"pid":null},{"id":null,"fullName":"Vidal, G. (Gerard)","name":"G.","surname":"Vidal","rank":2,"pid":null}],"openAccessColor":null,"publiclyFunded":null,"eoscIfGuidelines":null,"type":"other","language":{"code":"eng","label":"English"},"countries":null,"subjects":[{"subject":{"scheme":"keyword","value":"Materias Investigacion::Física"},"provenance":null},{"subject":{"scheme":"FOS","value":"0103 physical sciences"},"provenance":null},{"subject":{"scheme":"FOS","value":"01 natural sciences"},"provenance":null}],"mainTitle":"Dynamics of two coupled chaotic systems driven by external signals","subTitle":null,"descriptions":["Setting-up a controlled or synchronized state in a space-time chaotic structure targeting an unstable periodic orbit is a key feature of many problems in high dimensional physical, electronics, biological and ecological systems (among others). Formerly, we have shown numerically and experimentally that phase synchronization [M.G. Rosenblum, A.S. Pikovsky, J. Kurths, Phys. Rev. Lett. 78, 4193 (1997)] can be achieved in time dependent hydrodynamic flows [D. Maza, A. Vallone, H.L. Mancini, S. Boccaletti, Phys. Rev. Lett. 85, 5567 (2000)]. In that case the flow was generated in a small container with inhomogeneous heating in order to have a single roll structure produced by a B´enard-Marangoni instability [E.L. Koshmieder, B´enard Cells and Taylor Vortices (Cambridge University Press, 1993)]. Phase synchronization was achieved by a small amplitude signal injected at a subharmonic frequency obtained from the measured Fourier temperature spectrum. In this work, we analyze numerically the effects of driving two previously synchronized chaotic oscillators by an external signal. The numerical system represents a convective experiment in a small container with square symmetry, where boundary layer instabilities are coupled by a common flow. This work is an attempt to control this situation and overcome some difficulties to select useful frequency values for the driving force, analyzing the influence of different harmonic injection signals on the synchronization in a system composed by two identical chaotic Takens-Bogdanov equations (TBA and TBB) bidirectionally coupled."],"publicationDate":"2011-05-11","publisher":null,"embargoEndDate":null,"sources":null,"formats":["application/pdf"],"contributors":["Repositorio de la Universidad de Navarra"],"coverages":null,"bestAccessRight":{"code":"c_abf2","label":"OPEN","scheme":"http://vocabularies.coar-repositories.org/documentation/access_rights/"},"container":null,"documentationUrls":null,"codeRepositoryUrl":null,"programmingLanguage":null,"contactPeople":null,"contactGroups":null,"tools":null,"size":null,"version":null,"geoLocations":null,"id":"00064aabbda9::099573405f565d7ed50541ca77aa8e24","originalIds":["oai:navarra.escire.net:10171/17911","50|00064aabbda9::099573405f565d7ed50541ca77aa8e24"],"pids":[{"scheme":"handle","value":"10171/17911"}],"dateOfCollection":null,"lastUpdateTimeStamp":null,"indicators":{"citationImpact":{"citationCount":0.0,"influence":2.193092E-9,"popularity":4.0808779E-10,"impulse":0.0,"citationClass":"C5","influenceClass":"C5","impulseClass":"C5","popularityClass":"C5"}},"projects":null,"organizations":null,"communities":null,"collectedFrom":[{"key":"openaire____::891381590337449b8dfd6259d4031ae1","value":"NAVARA SCIRE"}],"instances":[{"pids":[{"scheme":"handle","value":"10171/17911"}],"accessRight":{"code":"c_abf2","label":"OPEN","scheme":"http://vocabularies.coar-repositories.org/documentation/access_rights/","openAccessRoute":null},"type":"Other ORP type","urls":["https://hdl.handle.net/10171/17911"],"publicationDate":"2011-05-11","refereed":"nonPeerReviewed","hostedBy":{"key":"openaire____::891381590337449b8dfd6259d4031ae1","value":"NAVARA SCIRE"},"collectedFrom":{"key":"openaire____::891381590337449b8dfd6259d4031ae1","value":"NAVARA SCIRE"}}],"links":null,"otherTitles":null,"inDiamondJournal":null,"green":null,"isGreen":null,"isInDiamondJournal":null}]}