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Communication Dans Un Congrès Année : 2015

DNS of turbulent channel flow: can we imitate conjugate heat-transfer with a Robin boundary condition?

Résumé

Turbulent heat fluxes, temperature variance and associated budgets obtained from the Direct Numerical Simulation of an incompressible turbulent channel flow with a Reynolds number of 150, based on the wall friction velocity, and a Prandtl number of 0.71 are presented and analysed for four cases : imposed temperature at the wall (Dirichlet), imposed heat flux (Neumann), heat exchange coefficient (Robin) and 3D conjugate heat transfer. Present results show that a Robin boundary condition can imitate most of the one point statistics obtained with conjugate heat-transfer accurately compared to the statistics obtained with an imposed temperature or heat flux at the wall.
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Dates et versions

hal-04452748 , version 1 (12-02-2024)

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Citer

C. Flageul, Sofiane Benhamadouche, Eric Lamballais, Dominique Laurence. DNS of turbulent channel flow: can we imitate conjugate heat-transfer with a Robin boundary condition?. THMT-15. Proceedings of the Eighth International Symposium On Turbulence Heat and Mass Transfer, Sep 2015, Sarajevo, Bosnia and Herzegovina. pp.223-226, ⟨10.1615/ICHMT.2015.THMT-15.360⟩. ⟨hal-04452748⟩
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