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Journal Articles Journal of Fluid Mechanics Year : 2014

The temperature spectrum generated by frictional heating in isotropic turbulence

Abstract

In every turbulent flow with non-zero viscosity, heat is generated by viscous friction. This heat is then mixed by the velocity field. We consider how heat fluctuations generated this way are injected and distributed over length scales in isotropic turbulence. A triadic closure is derived and numerically integrated. It is shown how the heat fluctuation spectrum depends on the Reynolds and Prandtl numbers.
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Dates and versions

hal-00946622 , version 1 (13-02-2014)

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Wouter J.T. Bos. The temperature spectrum generated by frictional heating in isotropic turbulence. Journal of Fluid Mechanics, 2014, 746, pp.85. ⟨10.1017/jfm.2014.93⟩. ⟨hal-00946622⟩
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