摘要
利用Lagrangian颗粒运动方程 ,数值求解了叶栅含沙水流中沙粒的运动。定义了撞击效率 ,给出了来流雷诺数 (或来流速度 ) ,来流冲角和沙粒尺寸对撞击效率的影响。数值模拟了不同来流雷诺数 ,来流冲角和尺寸的沙粒在栅中的运动轨迹 ,考虑了壁面、边界层、尾迹及少粒与壁面碰撞对颗粒运动的影响。数值分析了沙粒对叶栅固壁的冲击情况 。
The flow of dilute sandy water (sand carrying capacity less than 1.0kg/m 3) in planar cascade is numerically solved. The collision efficiency is defined. The influence of the Reynolds number based on the characteristic length of the cascade, the angle of attack and the sand diameter on the collision efficiency is discussed. The trajectories and impinging action of the sand particles moving inside the planar cascade flow are calculated by including the effects of the wall, the boundary layer, the wake, the sand particle size and the collision of the sand particle with the wall.
出处
《水动力学研究与进展（A辑）》
CSCD
北大核心
2003年第4期499-504,共6页
Chinese Journal of Hydrodynamics
基金
国家自然科学基金资助 ( 5 0 1790 2 1)
