Two-way coupling model for shock-induced laminar boundary-layer flows of a dusty gas
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- Wang, B., Xiong, Y. & Osiptsov, A. ACTA MECH SINICA (2005) 21: 557. doi:10.1007/s10409-005-0068-0
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The present paper describes a numerical two-way coupling model for shock-induced laminar boundary-layer flows of a dust-laden gas and studies the transverse migration of fine particles under the action of Saffman lift force. The governing equations are formulated in the dilute two-phase continuum framework with consideration of the finiteness of the particle Reynolds and Knudsen numbers. The full Lagrangian method is explored for calculating the dispersed-phase flow fields (including the number density of particles) in the regions of intersecting particle trajectories. The computation results show a significant reaction of the particles on the two-phase boundary-layer structure when the mass loading ratio of particles takes finite values.