粒子分离器气动特性数值研究

NUMERICAL SIMULATION OF FLOW FIELD IN AN AIR PARTICLE SEPARATOR

本文利用张量分析建立了三维贴体坐标系上的通用输运方程；采用贴体网格计算了粒子分离器二相流的三维流场；建立了三维的粒子运动轨迹微分方程，理论上分析了粒子分离器结构设计对其性能的影响，与试验结果吻合较好。

A general differential equation in oblique curvilinear coordinates has been established according to the tensor analysis and has been used to simulate the 3-D flowfield in a particle separator.Computational grid are set up with the body-fitted coordinates and a k-ε turbulence model is adopted in computation.Special fluid phenomena in a helicoidal pipe have been simulated.The particle trajectory model has also been established and has been used to analyze the performance of the vortex tube.The results are in good agreement with the experiment.