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采用瞬态阴影技术和激光消光技术对激波卷扬粉尘的现象进行了实验研究,理论研究采用PSIC(ParticleSourceinCell)模型,模型同时考虑了湍流效应及气固两相间的输运效应。结果表明,激波卷扬的粉尘颗粒在壁面附近湍流区内先被加速,一定高度后减速,从而在边界层内形成一个高颗粒浓度的区域。数值结果与实验结果基本一致。
The transient shadow technique and laser extinction technique were used to study the phenomenon of shock hoisting dust. The theoretical model was PSIC (Particle Source in Cell) model. The model also considered the turbulence effect and the transport effect between gas-solid two phases. The results show that the shockwave dust particles are accelerated firstly in the turbulence zone near the wall and decelerated at a certain height to form a high particle concentration region in the boundary layer. Numerical results and experimental results are basically the same.