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Memory effects in a gas of viscoelastic particles

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dc.affiliation.dptoUC3M. Departamento de Matemáticases
dc.affiliation.grupoinvUC3M. Grupo de Investigación: Modelización, Simulación Numérica y Matemática Industriales
dc.contributor.authorMompo Pavesi, Emanuel Gaston
dc.contributor.authorLópez Castaño, M. A.
dc.contributor.authorLasanta Becerra, Antonio
dc.contributor.authorVega Reyes, F.
dc.contributor.authorTorrente Orihuela, Ester Aurora
dc.contributor.funderMinisterio de Ciencia, Innovación y Universidades (España)es
dc.contributor.funderAgencia Estatal de Investigación (España)es
dc.date.accessioned2022-09-14T11:35:06Z
dc.date.available2022-09-14T11:35:06Z
dc.date.issued2021-06-01
dc.description.abstractWe study a granular gas of viscoelastic particles (kinetic energy loss upon collision is a function of the particles' relative velocities at impact) subject to a stochastic thermostat. We show that the system displays anomalous cooling and heating rates during thermal relaxation processes, this causing the emergence of thermal memory. In particular, a significant Mpemba effect is present, i.e., an initially hotter/cooler granular gas can cool down/heat up faster than an in comparison cooler/hotter granular gas. Moreover, a Kovacs effect is also observed, i.e., a nonmonotonic relaxation of the granular temperature¿if the gas undergoes certain sudden temperature changes before fixing its value. Our results show that both memory effects have distinct features, very different and eventually opposed to those reported in theory for granular fluids under simpler collisional models. We study our system via three independent methods: approximate solution of the kinetic equation time evolution and computer simulations (both molecular dynamics simulations and direct simulation Monte Carlo method), finding good agreement between them.en
dc.description.sponsorshipThis work has been partially funded by the Spanish Ministerio de Ciencia, Innovación y Universidades and the Agencia Estatal de Investigación through Grant Nos. MTM2017-84446-C2–2-R (A.L., E.M., and A.T.), FIS2017-84440-C2–2-P (A.T.), and FIS2016-76359-P. (F.V.R.). M.A.L.C. and F.V.R. also acknowledge support from the regional Extremadura Government through Project Nos. GR18079 and IB16087. Computing facilities from the Extremadura Research Centre for Advanced Technologies (CETA-CIEMAT) are also acknowledged. All grants and facilities were provided with partial support from the ERDF.en
dc.format.extent11
dc.identifier.bibliographicCitationMompo Pavesi, E. G., López Castaño, M. A., Lasanta Becerra, A., Vega Reyes, F., & Torrente Orihuela, E. A. (2021). Memory effects in a gas of viscoelastic particles. Physics of Fluids, 33, 1-11.en
dc.identifier.doihttps://doi.org/10.1063/5.0050804
dc.identifier.issn1070-6631
dc.identifier.publicationfirstpage1
dc.identifier.publicationissue6
dc.identifier.publicationlastpage11
dc.identifier.publicationtitlePhysics of Fluidsen
dc.identifier.publicationvolume33
dc.identifier.urihttps://hdl.handle.net/10016/35647
dc.identifier.uxxiAR/0000028751
dc.language.isoeng
dc.publisherAIPen
dc.relation.projectIDGobierno de España. MTM2017-84446-C2-2-Res
dc.relation.projectIDGobierno de España. FIS2017-84440-C2-2-Pes
dc.relation.projectIDGobierno de España. FIS2016-76359-Pes
dc.rights© 2021 Author(s). Published under an exclusive license by AIP Publishing.en
dc.rights.accessRightsopen accessen
dc.subject.ecienciaFísicaes
dc.subject.otherRigid body dynamicsen
dc.subject.otherThermal instrumentsen
dc.subject.otherMolecular dynamicsen
dc.subject.otherMonte Carlo methodsen
dc.subject.otherComputational fluid dynamicsen
dc.subject.otherViscoelasticityen
dc.subject.otherMpemba effecten
dc.titleMemory effects in a gas of viscoelastic particlesen
dc.typeresearch article*
dc.type.hasVersionAM*
dspace.entity.typePublication
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