Abstract
This paper presents the work in numerical computations of turbulent mixed convection based on k-ε and elliptic relaxation model. The 2-dimension mixed convection case demonstrated that significant improvements are obtained in predictions of the flow when compared with conventional models from literature and algebraic model. The new elliptic relaxation model is then applied to the computation of several convection flows in 3-dimension turbulent regime. For all simulated cases, good agreement with available experiment and earlier numerical simulation are obtained. It is proved that the new model provides a rational compromise between physically sounder wall treatment and computational robustness making it possible to use moderately dense computational grids.
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