Shock Wave Structure in a Mixture of Gas and Radiating Particles of Different Sizes

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  • Minota Toyoko
    Department of Applied Science, Faculty of Engineering, Kyushu University

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  • Shock Wave Structure in a Mixture of Ga

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The shock wave structure of a dusty gas containing particles of two different sizes is numerically investigated on the basis of the Boltzmann equation for a gas-particle mixture, and of a differential approximation for radiative heat transfer. For strong radiation, the temperature profiles of two particle clouds resemble each other, although their absorption coefficients are different. The radiative heat flux is always in the opposite direction to the gas flow. For weak radiation, if the difference of the absorption coefficients of two particle clouds is very large, the disagreement of their temperature profiles is remarkable. There appears behind the gas shock front a particular region in which the radiative heat flux is in the same direction as the gas flow, and the relaxation length to the final equilibrium state becomes shorter than the case without radiation.

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