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本文采用加罚函数有限元方法数值模拟在温度梯度和浓度梯度同时存在时双浮升力自然对流及其伴随的传热传质,着重探讨了多孔介质中传热传质的交叉耦合扩散Soret效应和Dufour效应的基本影响规律,展示了流场、温度场和浓度场随热附加扩散准则数和扩散附加热准则数的变化状况。
In this paper, the finite element method of penalty function is used to simulate the natural convection of double buoyancy and its accompanying heat and mass transfer when the temperature gradient and the concentration gradient coexist. The Soret effect of heat transfer and mass transfer in porous media is discussed. Dufour effect of the basic impact of the law, showing the flow field, temperature field and concentration field with the number of additional thermal diffusion rules and the proliferation of additional thermal criteria changes.