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A study of thermophoretic particle deposition in a particle laden stagnation flow including the effect of radiative heat transfer
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 Title & Authors
A study of thermophoretic particle deposition in a particle laden stagnation flow including the effect of radiative heat transfer
Jeong, Chang-Hun; Lee, Gong-Hun; Choe, Man-Su; Lee, Jun-Sik;
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 Abstract
A study of thermophoretic particle deposition has been carried out for a particle laden stagnation flow considering the effect of radiative heat transfer. Energy, concentration and radiative transfer equations are all coupled and have been solved iteratively assuming that absorption and scattering coefficients were proportional to the local concentration of particles. Radiative heat transfer was shown to strongly affect the profiles of temperature and particle concentration. e. g., radiation increases the thickness of thermal boundary layer and wall temperature gradients significantly. As the wall temperature gradients increase, the particle concentration at the wall decreases due to thermophoretic particle transport. The deposition rate that is thermophoretic velocity times particle concentration at the wall decreases as the effects of radiation increases. The effects of optical thickness, conduction to radiation parameter and wall emissivity have been determined. The effects of anisotropic scattering are shown as insignificant.
 Keywords
Radiative Heat Transfer;Thermophoresis;Particle Deposition;
 Language
Korean
 Cited by
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