中文摘要：

本文采用直接数值模拟计算了Re=669，S=1．42强旋流中的颗粒运动特性。计算的部分流动条件依照Sommerfeld＆Qiu的实验条件进行模化。模拟的结果揭示了旋流近场的颗粒运动的浓度，速度的时均量和脉动值的统计分布特性。

英文摘要：

The present paper carried out a direct numerical simulation of particle motion character- istics in strongly swirling flow with Re = 669 and S = 1.42. A part of computational flow conditions follows the experimental conditions by Sommerfeld ＆： Qiu. The simulation results show the statistical distribution characteristics of particle concentration, mean and fluctuation values of particle velocity.