气固两相流动中的一种颗粒相湍流模型  

A particle turbulence model in the gas-particle two-phase flow

作　　者：曾卓雄 徐晓东 王浩渊 程恒 公雪 ZENG Zhuoxiong;XU Xiaodong;WANG Haoyuan;CHENG Heng;GONG Xue(College of Power and Mechanical Engineering,Shanghai University of Electric Power,Shanghai 201306,China)

机构地区：[1]上海电力大学能源与机械工程学院,上海201306

出　　处：《能源研究与信息》2022年第3期176-180,共5页Energy Research and Information

基　　金：国家重点研发计划项目(2018YFB0604204)。

摘　　要：颗粒湍流有其自身的产生与耗散。鉴于颗粒湍流模型对预测精度有很大影响,建立了考虑各向异性和两相相互作用的颗粒相湍流模型,采用代数雷诺应力模型封闭气固两相产生项及两相速度关联产生项。分别利用本模型和k_(g)−ε_(g)−k_(p)−ε_(p)−θ模型对比研究了轴对称旋流两相流动的颗粒相平均速度及脉动速度,结果显示,本模型的模拟结果比k_(g)−ε_(g)−k_(p)−ε_(p)−θ模型的更接近于实验数据,表明本模型更符合颗粒湍流的内在特性。Particle turbulence has its own generation and dissipation.Particle turbulence model has a great impact on the prediction accuracy.So,a particle turbulence model was established in which the anisotropy and the interaction between two phases were considered,and the generation terms of both gas-particle two phases and two-phase velocity correlations were closed by the algebraic Reynolds stress model.Numerical simulation on axisymmetric swirl gas-particle flow was performed using present model and k_(g)-ε_(g)-k_(p)-ε_(p)-θturbulence model.Results showed that the predicted results such as particle mean velocity and fluctuation velocity by present model were closer to the experimental ones,comparing with those by k_(g)-ε_(g)-k_(p)-ε_(p)-θmodel.It indicated that the present model was more consistent with the inherent characteristics of particle turbulence.

关 键 词：两相流动 旋流 双尺度脉动 

分 类 号：TK124[动力工程及工程热物理—工程热物理]