气固两相混合层流场双向耦合的数值研究  

NUMERICAL STUDY ON THE GAS-SOLID TWO-PHASE MIXING LAYER BY TWO-WAY COUPLING MODEL

作　　者：林建忠[1] 石兴[1] 

机构地区：[1]浙江大学力学系

出　　处：《工程热物理学报》2001年第4期496-499,共4页Journal of Engineering Thermophysics

基　　金：国家杰出青年科学基金资助项目(No.20006029)

摘　　要：采用双向耦合模型对有涡配对的二维气固两相混合展数值模拟，在考虑颗粒对流场反作用基础上进一步对颗粒间通过流体的相互作用进行分析。流场用拟谱方法求解，颗粒用颗粒轨道模型跟踪。结果发现，流场中大涡卷起和配对仍居主导地位；颗粒Ｓｔ数为Ｏ（０．１）～Ｏ（１）时，颗粒减弱了流场雷诺应力强度，加快涡量扩散； Ｓｔ数为Ｏ（１）时，颗粒分布极不均匀，主要集中在渴的边缘．The vortex pairing in 2D gas-solid mixing layer is simulated considering the two-way coupling model and the interactions among the particles through the fluids. The flow field is solved by pseudo-spectral method and the particles are traced individually. The results reveal that the vortex rolling up and pairing are diminutive; Particles with St ranging for O(0.1) - O(1) decrease the Reynolds stress, accelerate the vortex dispersion; Particles at St about 1 are distributed nonuniformly in the flow field, they are concentrated at the edge of the vortex.

关 键 词：气固两相流 混合层 双向耦合 数值模拟 

分 类 号：O359[理学—流体力学]