质流相似法原理与过程分析

提出的所谓质流相似法,不同于传质相似理论中方程分析法和量纲分析法.质流相似法是通过质交换现象中基本传质方式的质流量相似,再转换成与质流量有关的各物理量场的相似,以获得相似准则和准则方程式.此法独特新颖,与笔者曾提出的热流相似法通融一体,对于热工相似理论的完善和发展,起到一定的作用.

Combined Effect of Magnetic Field and Thermal Dispersion on a Non-Darcy Mixed Convection

This paper is devoted to investigate the influences of thermal dispersion and magnetic field on a hot semi-infinite vertical porous plate embedded in a saturated Darcy-Forchheimer-Brinkman porous medium. The coefficient of thermal diffusivity has been assumed to be the sum of the molecular diffusivity and the dynamic diffusivity due to mechanical dispersion. The effects of transverse magnetic field parameter (Hartmann number Ha), Reynolds number Re (different velocities), Prandtl number Pr (different types of fluids) and dispersion parameter on the wall shear stress and the heat transfer rate are discussed.