This report presents the computational results for the two-dimensional benchmark test case described in research item 1.45. The code used is EXACT3, standing for explicit time marching algorithm for continuous thermal fluid flow. It is a three-dimensional finite difference code for simulating buoyant turbulent airflows within buildings.
Natural convection in a thermally driven square cavity filled with air is studied numerically. Since the thermal Rayleigh number of the configuration ranges between 108 and 1012, the flow is turbulent and k-& models are used to predict the behavior of the flow. For this natural convection problem, the viscous sublayer must be discretized and the behavior of the turbulent quantities is damped within this sublayer through low-Reynolds number modelling.
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