THMT-18. Turbulence Heat and Mass Transfer 9 Proceedings of the Ninth International Symposium On Turbulence Heat and Mass Transfer
DOI: 10.1615/THMT-18
ISBN Print: 978-1-56700-468-7
ISBN Online: 978-1-56700-467-0
ISSN Print: 2377-2816
Unifying the near-wall treatment of the turbulent heat fluxes for all kinds of temperature boundary conditions with the Elliptic Blending approach
pages 387-398
DOI: 10.1615/THMT-18.370
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ABSTRACT
New formulations of the near-wall scrambling and dissipation terms are proposed for modeling the turbulent heat-fluxes, in order to extend the Elliptic Blending approaches of Dehoux et al. [1, 2] to all possible boundary conditions for the temperature: imposed wall-temperature, imposed heat flux or conjugate heat transfer. The new model satisfies the near-wall budget and, consequently, the asymptotic behavior of the turbulent heat fluxes. A priori comparisons with the recent DNS data of Flageul et al. [4, 5] are very encouraging. A posteriori tests on a forced convection flow are carried out in order to validate the new formulation.
