| 刘伟,万国新,陈景兵,刘君.可压缩气固混合层中离散相与连续相的相互作用研究[J].计算力学学报,2009,26(1):8~14 |
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| 可压缩气固混合层中离散相与连续相的相互作用研究 |
| Study on the interaction between the continuous and the dispersed phases in compressible gas-solid mixing layer |
| 投稿时间：2007-03-20 修订日期：2007-12-18 |
| DOI：10.7511/jslx20091002 |
| 中文关键词: 可压缩流动 气固两相流 混合层流动 数值模拟 |
| 英文关键词:compressible flow gas-solid two-phase flow mixing layer flow numerical simulation |
| 基金项目:973国家重大基础研究(5132403010103)资助项目. |
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| 摘要点击次数: 1447 |
| 全文下载次数: 1464 |
| 中文摘要: |
| 拓扑及多孔材料的微结构,使得结构柔度最小。本文提出了一种宏观结构与微观单胞构型并发优化设计的方法,在此方法中,引入宏观密度和微观密度两类设计变量,在微观层次上 |
| 英文摘要: |
| Although there have been many numerical studies on particle dispersion in mixing layers, most of them have been conducted for incompressible mixing layers. In this study, numerical simulations of a temporally developing compressible mixing layer are performed to investigate particle dispersion under different convective mach number. The particles are traced using a Lagrangian approach assuming two-way coupling between the continuous and the dispersed phases. Not only the action of gas-field to particles but also the reaction of particles to gas-field is considered. The full compressible Navier—Stokes equations are solved with a high-order finite difference WNND (Weighted Non-Oscillatory, containing No free parameters and Dissipative) scheme, and the equations of particles are discretized by biased three-point difference. The study focuses on the roles of the large-scale vortex structures in particle dispersion at low, medium and high Stokes numbers and the influence of particle on the flow field structure. At the convective Mach number 0.5, the influence of different Stokes number on the dispersion of particles is investigated. At the convective Mach number 0.8, the influence of particles to the shocklet structure in mixing layers is also investigated. |
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