Phonon hydrodynamics revisited

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dc.contributor.authorStruchtrup, Henning
dc.date.accessioned2025-11-27T22:05:46Z
dc.date.available2025-11-27T22:05:46Z
dc.date.issued2025
dc.description.abstractThe equations of phonon hydrodynamics are re-considered in the framework of expansions of the phonon kinetic equation for large frequency of momentum conserving N-processes. Specifically, the Chapman-Enskog expansion provides a sound derivation of non-linear transport equations that fulfill all necessary compatibility requirements. The celebrated Guyer-Krumhansl equations can only be derived under the more restrictive condition of slow processes, and are affected by compatibility problems. The impact of different energy-temperature relations on the structure of equations is discussed.
dc.description.embargo2026-11-27
dc.description.reviewstatusReviewed
dc.description.scholarlevelFaculty
dc.description.sponsorshipNatural Sciences and Engineering Research Council of Canada (NSERC) through Discovery Grant RGPIN-2022-03188
dc.identifier.citationStruchtrup, H. (2025). Phonon hydrodynamics revisited. In Fuhrmann, J., Hömberg, D., Müller, W.H., & Weiss, W. (Eds.) Advances in continuum physics. Advanced structured materials, vol 238. Springer, Cham. https://doi.org/10.1007/978-3-031-93918-1_27
dc.identifier.urihttps://hdl.handle.net/1828/22931
dc.language.isoen
dc.publisherSpringer
dc.relation.ispartofseriesAdvanced Structured Materials (STRUCTMAT, volume 238)
dc.subject.departmentDepartment of Mechanical Engineering
dc.titlePhonon hydrodynamics revisited
dc.typeBook chapter

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