Two-way coupling model for shock-induced laminar boundary-layer flows of a dusty gas  

作　　者：Boyi Wang Yi Xiong A.N. Osiptsov 

机构地区：[1]LNM, Institute of Mechanics, Chinese Academy of Sciences,Beijing 100080, China [2]Institute of Mechanics, Moscow State University,119899 Moscow, Russia

出　　处：《Acta Mechanica Sinica》2005年第6期557-563,共7页力学学报（英文版）

基　　金：The project supported by the National Natural Science Foundation of China(90205024);Russian Foundation for Basic Research(RFBR and(RFBR-NSFC-39004)

摘　　要：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 twophase continuum framework with consideration of the finiteness of the particle Reynolds and Knudsen numbers. The full Lagrangian method is explored for calculating the dispersedphase 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.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 twophase continuum framework with consideration of the finiteness of the particle Reynolds and Knudsen numbers. The full Lagrangian method is explored for calculating the dispersedphase 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.

关 键 词：Shock wave Dusty gas Two-phase boundary layer Two-way coupling Numerical modeling 

分 类 号：O354[理学—流体力学] X169[理学—力学]