Abstract
To simulate the mixing process induced by the combined action of mechanical and thermal stirring, a numerical analysis is carried out by using a multi-equations approach of turbulence closure. The mixing properties, such as entrainment rate, thickness of the interfacial transition layer, fluctuation of thermal field and so on, are analytically reproduced by the present model, which shows a fairly good agreement with our experimental results. Additionally, the present analysis also succeeds in describing the turbulent field, e. g., turbulence intensity, turbulent energy flux balance, etc., which are much difficult to measure in laboratory and field observations. Combining the analytical work presented here with experimental and field informations, we should be able to profoundly understand the mixing mechanism in such a situation.
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