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-  2018 

基于COMSOL PDE仿真的垂直板驻点混合对流与传热 Mixed convection stagnation-point flow towards a stretching vertical sheet based on COMSOL

Keywords: 驻点流,垂直板,传热,边界层,COMSOL

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Abstract:

研究了不可压缩粘性流体在垂直指数延伸壁面上的边界层流动与传热问题.通过相似变换将边界层控制方程转换为非线性常微分方程,并利用COMSOL软件的PDE(偏微分方程)模块进行仿真求解.讨论顺流和逆流时浮力参数λ和Prandtl数Pr对流体流动和传热特性的影响.结果显示:顺流时,表面摩擦系数和Nusselt数均随浮力参数λ的增大而增大;随着Pr数增大,Nusselt数增大而表面摩擦系数减小.逆流时,表面摩擦系数和Nusselt数均随浮力参数λ的增大而减小,随Pr增大而增大

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