DNS of Channel flow with conjugate heat transfer Budgets of turbulent heat fluxes and temperature variance

Cédric Flageul (1) , Sofiane Benhamadouche (1) , Eric Lamballais (2) , Dominique Laurence (3, 1)

1 EDF R&D MFEE - Mécanique des Fluides, Energies et Environnement
2 PPrime [Poitiers] - Institut Pprime [UPR 3346]
3 University of Manchester [Manchester]

Budgets of turbulent heat fluxes and temperature variance obtained from the Direct Numerical Simulation of an incompressible periodic channel flow with a Reynolds number of 150 (based on friction velocity) and a Prandtl number of 0.71 are presented and analysed for three cases: imposed temperature, imposed heat flux and 3D conjugate heat transfer. The dissipation rate associated with the temperature variance is strongly impacted by the thermal boundary condition.

Mots clés: Conjugate Heat Transfer; DNS; Budgets; Turbulence

Domaines: Mécanique des fluides [physics.class-ph]

Cédric Flageul, Sofiane Benhamadouche, Eric Lamballais, Dominique Laurence. DNS of Channel flow with conjugate heat transfer Budgets of turbulent heat fluxes and temperature variance. Engineering Turbulence Modelling and Measurements (10th ETMM), ERCOFTAC, Sep 2014, Marbella, Spain. ⟨hal-01162346⟩