气固两相流中颗粒间碰撞传热进展  

Advances of impact heat transfer between particles in gas-solid flow

作　　者：常剑[1] 高金森[1] 徐春明[1] 

机构地区：[1]中国石油大学重质油国家重点实验室,北京102249

出　　处：《计算机与应用化学》2007年第4期425-428,共4页Computers and Applied Chemistry

基　　金：国家自然科学基金重大项目(20490202);教育部新世纪优秀人才支持计划(NCET-04-0107)资助

摘　　要：稠密气固两相流中,颗粒间的碰撞成为流动、传热过程的重要作用机理,它们对热交换过程有重要的贡献。文章概述了气固两相流中,颗粒间碰撞传热机理的研究现状;评述了欧拉-拉格朗日和欧拉-欧拉模型框架下,颗粒间碰撞传热研究的进展。基于颗粒动力学理论和随机碰撞频率的概念,建立了适用于欧拉-欧拉方法的颗粒间碰撞传热的数学模型。The inter-particle heat transfer due to collision is thought to be significant in the dense gas-solid two phases flow, such as in bubbling and turbulent fluidized beds. The colliding particle-particle heat transfer mechanism was summarized. The current situation and development of colliding heat transfer in the frame of Eulerian/Eulerian and Eulerian/Lagrangian model were reviewed. Based on the granular kinetic theory and stochastic collision frequency, a mathematics model was presented for predicting the particle-to-particle heat transfer in Eulerian/Eulerian approach.

关 键 词：气固两相流 颗粒碰撞传热 数值模拟 欧拉模型 拉格朗日模型 

分 类 号：O359[理学—流体力学]