Numerical Study of Thermophoresis on Aerosol Particle Deposition from Hiemenz Flow through Porous Medium onto a Stretching Surface

A theoretical study of aerosol particles responding to thermophoresis, involving the particle deposition rate onto a stretching permeable surface with internal heat source is proposed. The effects on particle transport mechanisms include Brownian diffusion, thermophoresis, porosity, stretching surface, heat source, and suction/injection velocity. The governing equations of continuity, momentum, energy, and particle concentration are transformed using similarity analysis, and the solutions are obtained through appropriate numerical schemes. The predicted results show that if the thermophoretic and stretching parameters increase, the deposition velocity increases for a cold surface. However, the deposition velocity decreases rapidly for a hot surface as the thermophoretic parameter increases. By way of the modeling analysis, the particle deposition velocities are calculated to control the particle mobility from the air.

並列關鍵字

Hiemenz flow ； porous medium ； thermophoresis ； particle deposition ； stretching surface

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