Direct Numerical Simulations of Indoor Ventilation
DNS of turbulent mixed convection in a complicated 3D-domain are performed with a fast fourth order finite-volume method using a separation of variables method together with the capacitance matrix technique. The method generally allows to use hexahedral computational meshes, which are non-equidistant in all directions and non-regular in any two directions. We investigate instantaneous and statistical characteristics of turbulentmixed convection in parallelepiped convection cells with heated parallelepiped obstacles inside for Rayleigh number Open image in new window =3 ×108, Prandtl number Open image in new window = 0.714 and Reynolds number based on the velocity of the inlet flow Open image in new window = 2.37 ×104 in comparison with results of purely forced convection for the same Reynolds number.
KeywordsReynolds Number Natural Convection Prandtl Number Rayleigh Number Direct Numerical Simulation
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