PDA measurement of mean and turbulence properties for particle-laden open channel flow
The mean and turbulence properties of an open channel flow laden with different sized particles (with the size range less man 100 micron) were experimentally investigated by means of PDA (phase Doppler anemometry) measurement. The obtained results indicate that in the outer region, the presence of large numbers of fine particles (with the size range less than 20 micron) is a dominating feature and thus has a negligibly small effect on the mean velocity and turbulence intensity profiles for a dilute particle-laden open channel flow, whereas significant differences concerning both the velocity field and particle size distribution occur primarily in the near-wall region as compared to a particle-free channel flow. The particle preferential concentration in the near-wall region was presented, and the dual-peak feature of particle size distribution was observed indicating that the different sized particles are likely to jointly exert an influence on the interaction with the near-wall turbulence.
Song-li Xu Jing-yu Fan Dao-zeng Wang
Shanghai Institute of Applied Mathematics and Mechanics, Shanghai University, Shanghai 200072, China
国际会议
The 5th International Conference on Nonlinear Mechanics(第五届国际非线性力学会议)
上海
英文
1168-1173
2007-06-11（万方平台首次上网日期，不代表论文的发表时间）