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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 different 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-01323794 , version 1 (31-05-2016)

Identifiants

  • HAL Id : hal-01323794 , version 1

Citer

Cédric Flageul, Sofiane Benhamadouche, Eric Lamballais, Dominique Laurence. DNS of turbulent channel flow: can we imitate conjugate heat-transfer with a Robin boundary condition?. 8th international symposium of Turbulence Heat and Mass Transfer , Sep 2015, Sarajevo, Bosnia and Herzegovina. ⟨hal-01323794⟩
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