In the case of conjugate heat transfer, the dissipation rate associated with the temperature variance is discontinuous at the fluid-solid interface. The discontinuity satisfies a compatibility condition involving the fluid-solid thermal diffusivity and conductivity ratios and the relative contribution to the dissipation rate of its wall-normal part. The present analysis is supported by the Direct Numerical Simulations of an incompressible channel flow at a Reynolds number, based on the friction velocity, of 150, a Prandtl number of 0.71 and several values of fluid-solid thermal diffusivity and conductivity ratios.
|Number of pages||8|
|Journal||International Journal of Heat and Mass Transfer|
|Early online date||8 Apr 2017|
|Publication status||Published - 1 Aug 2017|
- Conjugate heat transfer
- Direct Numerical Simulation
- Dissipation rate
- Turbulent channel flow
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On the discontinuity of the dissipation rate associated with the temperature variance at the fluid-solid interface for cases with conjugate heat transfer.
Flageul, C. (Contributor), Benhamadouche, S. (Contributor), Laurence, D. (Contributor) & Lamballais, E. (Contributor), University of Manchester, 10 Apr 2017