Numerical Study of Thermophoresis on Mass Transfer from Natural Convection Flow over a Vertical Porous Medium with Variable Wall Heat Fluxes

被引：2

作者：

Huang, Jian-Sheng ^{[1
]}

机构：

[1] Chung Yuan Christian Univ, Dept Mech Engn, Chungli 32023, Taiwan

来源：

APPLIED SCIENCES-BASEL | 2021年 / 11卷 / 21期

关键词：

thermophoresis; non-Darcy; power-law heat flux; porous medium; natural convection; LAMINAR BOUNDARY-LAYER; PARTICLE DEPOSITION; MIXED CONVECTION; FLAT-PLATE; VISCOUS DISSIPATION; THERMAL-RADIATION; AEROSOL-PARTICLES; SORET-DUFOUR; TRANSPORT; SURFACE;

D O I：

10.3390/app112110418

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

This study investigates heat and mass transfer under natural convection flow along a vertical permeable surface with variable wall heat fluxes through a porous medium. The non-Darcian model is employed for the medium. The effects of suction/blowing, inertia, buoyancy ratio, exponent of heat flux, position parameter, Schmidt number, and thermophoresis are considered. The governing equations of continuity, momentum, energy, and concentration are solved by adopting similarity transformation and Runge-Kutta integration with a shooting technique. Results of interest, such as velocity, temperature, and concentration profiles related to local Nusselt and Sherwood numbers, are obtained for the selected buoyancy ratio at different magnitudes of the thermophoretic effect. The numerical solutions help us to realize the gas diffusion phenomena and control the transport technology.

引用

页数：22

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