摘要
由颗粒运动的朗之万方程出发,对流体脉动速度采用扩维方法,把色噪声转化为白噪声,再降维从而得到两个不同层次的PDF输运方程。通过对颗粒运动方程求解和高斯分布假设,解决PDF方程的封闭问题,并获得颗粒二阶矩模型。
Base on particle Langevin equation of two -phase flows,two different PDF equations on different level are obtained by dealing with colour-noise using the method of state vector expanding and reducing.On the assumption of gassion distribution,the closure problem is solved effectively only using the analytic solution of particle Langevin equations, and the second-order-moment model of two-phase flows is obtained.
出处
《杭州电子工业学院学报》
2004年第4期23-26,共4页
Journal of Hangzhou Institute of Electronic Engineering
基金
浙江省教育厅科技计划项目(20030614)
