多相流颗粒轨道模型的一种新解法

A New Methcd for Random-Trajactory Model in Two-phase Flow

本文提出了一个空间变量法来解颗粒运动方程，该方法能使颗粒轨迹的每一个计算点准确地落在气相网格线上，同时能方便准确地计算出网格时间，从而能准确完成拉格朗日系与欧拉系之间的物理量转换。通过对煤粉浓谈低负荷燃烧器的撞击分离装置内气固两相流动的计算表明，计算结果与实验值吻合得较好。

This paper put forwand a space-variable solution of particles'kinematics equations.The method can make the computational point of particles'trajectory located at grid borderline exactly,so that the interval particles put through a grid can be transformed surely into those of Eulerian System. The method was proved by computing two-phase turbulent flow in pulverized coal separetor of Rich/Leau-Low load-Flame stabilization burner.