含灰气体激波沿平壁传播时诱导的边界层流动<sup>*</sup>

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含灰气体激波沿平壁传播时诱导的边界层流动^*

基金项目: * 国家自然科学基金

Institute of Mechanics, Chinese Academy of Sciences, Beijing 100080, P. R. China

摘要: 本文研究合灰气体激波沿平直壁面传播过程中在壁面附近形成的层流边界层流动。我们依照双连续介质双向耦合模型处理含灰气体激波的波后流动及其诱导的边界层问题,控制方程采用有限差分方法数值求解,给出了激波下游两相流场特性并考虑了含灰气体激波的松弛结构对边界层流动的影响。
- 含灰气体 /
- 激波 /
- 边界层 /
- 松弛结构
Abstract: When a dusty shock wave propagates along a flat plate, laminar boundary-layer flows are formed over the solid wall. The induced boundary layer problem is numerically investigated in the present paper. Using a two-continuum medium and two way coupling model, the governing equations for this two-phase flow system are given and then solved by the finite difference method. The calculation results indicate that the post-shock flow field is characterized by relaxation phenomenon. The effects of the relaxation structure of the dusty shock wave on the boundary layer are discussed in detail.
- dusty gas /
- shock wave /
- boundary layer /
- relaxation structure

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