摘要
使用PIV实验和数值计算研究了壁面射流下主流中的100μm颗粒运动分布。在气固两相主流中引入一股不含尘气流,能够影响颗粒在流道内的分布,形成沿流动方向和高度方向的不均匀分布。结果显示:射流速度越高,流场中心低浓度颗粒区域越大,射流孔后位置越远,流场中心低浓度颗粒区域越大,但壁面附近浓度增加。改善小颗粒的主动流动控制手段,为设计出高效的惯性粒子分离器提供依据。
Jet influence to 100 μm particles in a cubic flow field is analyzed experimentally and computationally.By forcing a jet flow without particles to the main stream,the particle uniform dispersion is disturbed on different directions.The extent of low particle concentration increases with the increment of the injection velocity.The area of low particle concentration is more wider according to the flow direction from the jet position.But the concentration will increase near wall.Based on this effect,a new active control method for the inertia particle separator is proposed.It will provide valuable evidence for gas-particle separation.
出处
《煤炭技术》
CAS
北大核心
2010年第10期8-10,共3页
Coal Technology
基金
国家自然科学基金资助项目(507760567)
