Numerical Estimates for the Bulk Viscosity of Ideal Gases

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dc.contributorVirginia Techen
dc.contributor.authorCramer, Mark S.en
dc.contributor.departmentBiomedical Engineering and Mechanicsen
dc.date.accessed2014-04-04en
dc.date.accessioned2014-04-24T18:34:17Zen
dc.date.available2014-04-24T18:34:17Zen
dc.date.issued2012-06-01en
dc.description.abstractWe estimate the bulk viscosity of a selection of well known ideal gases. A relatively simple formula is combined with published values of rotational and vibrational relaxation times. It is shown that the bulk viscosity can take on a wide variety of numerical values and variations with temperature. Several fluids, including common diatomic gases, are seen to have bulk viscosities which are hundreds or thousands of times larger than their shear viscosities. We have also provided new estimates for the bulk viscosity of water vapor in the range 380-1000 K. We conjecture that the variation of bulk viscosity with temperature will have a local maximum for most fluids. The Lambert-Salter correlation is used to argue that the vibrational contribution to the bulk viscosities of a sequence of fluids having a similar number of hydrogen atoms at a fixed temperature will increase with the characteristic temperature of the lowest vibrational mode. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4729611]en
dc.description.sponsorshipNational Science Foundation (NSF) CBET-0625015en
dc.format.mimetypeapplication/pdfen
dc.identifier.citationCramer, M. S., "numerical estimates for the bulk viscosity of ideal gases," Phys. Fluids 24, 066102 (2012); http://dx.doi.org/10.1063/1.4729611en
dc.identifier.doihttps://doi.org/10.1063/1.4729611en
dc.identifier.issn1070-6631en
dc.identifier.urihttp://hdl.handle.net/10919/47646en
dc.identifier.urlhttp://scitation.aip.org/content/aip/journal/pof2/24/6/10.1063/1.4729611en
dc.language.isoen_USen
dc.publisherAIP Publishingen
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectAerodynamicsen
dc.subjectComputational fluid dynamicsen
dc.subjectEquations of stateen
dc.subjectRotational-vibrational statesen
dc.subjectViscosityen
dc.subjectVibrational-relaxation timesen
dc.subjectThermophysical propertiesen
dc.subjectOrganicen
dc.subjectRankine cyclesen
dc.subjectWaste heat-recoveryen
dc.subjectSpherical resonatoren
dc.subjectWorkingen
dc.subjectFluidsen
dc.subjectThermophysical propertiesen
dc.subjectShock-tubeen
dc.subjectTemperature dependenceen
dc.subjectRotational relaxationen
dc.titleNumerical Estimates for the Bulk Viscosity of Ideal Gasesen
dc.title.serialPhysics of Fluidsen
dc.typeArticle - Refereeden
dc.type.dcmitypeTexten

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