含尘气体中的非定常激波

对含尘气体中非定常激波进行了实验研究和数值模拟。实验在垂直两相激波管中实现。气体与含尘气体之间分界平面的形成以及分界面处粉尘浓度的瞬时测定为实验研究提供了有效的手段。在双流体模型基础上，应用时间分裂法，将ＴＶＤ格式和ＭａｃＣｏｒｍａｃｋ格式分别应用于气相和颗粒相方程，模拟了激波与含尘气体相互作用现象，讨论了含尘气体物理参数对激波传播行为的影响。计算结果与实验现象符合较好。

UNSTEADY SHOCK WAVES IN DUSTY GASES

Unsteady shock Waves in dusty gases have been investigated experimentally andnumerically. Experiments are conducted in a two-phase shock tube in which a planar interface between the gas and the dusty gas is placed and a shock is generated in the gas,the particle concentration in the vicinity of the interface is measured temporally,On the basis of the two-fluid modeland the timestep splitting method,the TVD and MacCormack sehemes are employed to deal withgas and particle phase equations respectively.Phenomena of in teractions between shock waves anddusty gases are simulated,Effects of physical parameters in dusty gases on the behaviour of shockwave propagation are discussed. Numerical results are in good agreement with obervations.