Abstract
Direct Numerical Simulations have been performed for a fully-developed low Mach turbulent flow of an ideal gas with thermo-dependent viscosity and thermal conductivity in a flat channel at mean friction Reynolds number Reτ=180 submitted to asymmetric heating with a wall temperature ratio T2/T1=2. Mean and turbulent statistics of the flow have been studied and compared for two different thermal boundary conditions: fixed temperatures on the one hand and fixed heat flux densities on the other hand. The influence of the boundary condition type is studied. Temperature variance is particularly impacted by this choice and exhibits asymmetric profiles with different behavior depending on the boundary condition.
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