研究两相流中固粒对流体湍动特性影响的新方法

A NEW METHOD OF STUDYING THE EFFECT OF PARTICLES ON THE TURBULENT PROPERTIES IN THE TWO-PHASE FLOWS

本文提出了计算两相流中固粒对流体湍动特性影响的一种新方法，得到不同情况下固粒对流体端动特性的影响。将该方法用于槽流湍流场的求解，说明该方法是可行的。

A new method of giving the effect of particles on the turbulent quantities in the twophase flow is presented. In this method, the fluctuating velocity equations which contain the particle term are derived and solved within the range of micro-scale by means of spectrum method based on the first order approximate solutions of fluids. Then turbulent intensity and Reynolds stress of fluid are obtained by averaging fluctuating velocities. The effect of particles in the different situations, i.e. concentration of particle, ratio of particle fluctuating velocity to fluid fluctuating velocity, particle relax time, is given. The method is applied to solve channel flows, the results show that this method is desirable.