摘要
用随机过程理论建立气固两相耦合脉动量Lagrange方程,并建立了气固两相流随机颗粒轨道模型中颗粒Reynolds正应力的Lagrange方程.将新的模型运用于各向同性的湍流衰减的流场中,模拟颗粒的湍流扩散特性,与文[1]中的模型和实验结果作比较,并使用新模型模拟了后台阶两相流动.
A Lagrangian equation of (v′_( g i)v′_(pi)) on the particles trajectory is obtained with stochastic process theory, and then Lagrangian equation of particle Reynolds stresses is exactly set up. Wang & Stock experiment on heavy particle dispersion considered scale ratio and flow decay is simulated by both this method and Zhang's model^([1]). Simulation results show the new method is better than Zhang's model. A backward-facing step two-phase flow is calculated by the new model and the results show good agreement with the experiment results.
出处
《计算物理》
CSCD
北大核心
2004年第6期538-542,共5页
Chinese Journal of Computational Physics
基金
浙江省教育厅科研计划(20030614)项目资助
