A new two-equation turbulence model which incorporates some essential characteristics of second-order closure models is proposed. The present model takes into account low-Reynolds-number effects originating from the physical requirements. The model quite successfully predicts both wall-turbulent and homogeneous shear flows, the latter of which has been very difficult to simulate with existing two-equation turbulence models. Channel flows with injection and suction at wall surfaces, and separated and reattaching flows downstream of a backward-facing step are also calculated. Comparisons of the computational results with the measurements indicate that the present model is effective in calculating complex turbulent flows of technological interest. Furthermore, the low-Reynolds-number model functions are re-evaluated from the computational results, yielding some insights into further development of this kind of turbulence models. �@
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