当溶质进入具有不同温度的溶液中时, 由于存在浓度和温度梯度, 混合流体中会有热量和质量的扩散, 进而发生自然对流现象. 这种由浓度梯度和温度梯度的综合效应引起的自然对流称为双扩散自然对流
...双扩散对流；Soret效应 [gap=1022]Keywords： Engineering thermophysics; Porous media; Heat and mass transfer; Double-diffusive convection; Soret effect ...
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研究了静态定向结晶过程中的双扩散对流现象。
Double diffusive convection during static crystallization was studied.
文中还评述了现有双扩散对流与结晶过程耦合的计算结果及有待进一步研究的问题。
The existing numerical results of crystal growth process coupling with double diffusive convection are also reviewed in this paper.
结果表明，糊状区中由于热溶质双扩散对流造成的密度变化是形成A偏析的根本原因。
The results showed that the density variation induced by double-diffusive convection is significant to the formation and evolution of A-segregates.
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