We perform a numerical study of thermal diffusion and diffusion thermo effects on double diffusive mixed convection in a driven square cavity, differentially heated and salted using a hybrid lattice Boltzmann solver. The multiple relaxation time (MRT) for the lattice Boltzmann equation is used to obtain the velocity field whereas the temperature and concentration fields are deduced from energy and species balances equations using a finite difference method (FDM). The model is validated, resulting in satisfactory agreement with data from the literature. The different validations demonstrate the effectiveness of the proposed approach. Besides, the results showed that the Soret and Dufour numbers have great effects on the flow structure and heat and mass transfer.

中文翻译：

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使用 MRT-格子玻尔兹曼有限差分模型的差热盐驱动腔中的热扩散和扩散热效应的数值研究

我们使用混合晶格玻尔兹曼求解器对驱动方形腔中的双扩散混合对流进行热扩散和扩散热效应的数值研究，差分加热和盐化。格子玻尔兹曼方程的多重弛豫时间 (MRT) 用于获得速度场，而温度和浓度场是使用有限差分法 (FDM) 从能量和物质平衡方程推导出来的。该模型经过验证，与文献数据具有令人满意的一致性。不同的验证证明了所提出方法的有效性。此外，结果表明，Soret数和Dufour数对流动结构和传热传质有很大影响。