Abstract
For numerical analysis of shock wave propagation in gas-particle mixtures, drag coefficients of a sphere in steady flows are generally used. However, it is shown both experimentally and numerically that a shock loaded solid sphere experiences unsteady drag forces. The paper describes a model of unsteady drag force and its effect on the structure of the non-equilibrium region behind a shock front traveling in a dusty gas. The results are compared with those obtained by using a steady drag coefficient and are discussed. It is demonstrated that the large drag force at the early stage of the interaction between shock-wave induced flow and a solid particle affects the flow structure that is obtained with a steady drag force.
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Communicated by O. Igra.
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Saito, T., Saba, M., Sun, M. et al. The effect of an unsteady drag force on the structure of a non-equilibrium region behind a shock wave in a gas-particle mixture. Shock Waves 17, 255–262 (2007). https://doi.org/10.1007/s00193-007-0109-7
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DOI: https://doi.org/10.1007/s00193-007-0109-7