摘要
本文对一前弯多翼离心风机的内流场进行了三维数值分析。结果显示蜗壳内部的最大压力沿着轴线方向分布在不同的圆周位置,叶轮内部蜗舌上游区域存在着进口旋涡,蜗舌附近存在着明显的从叶片出口到进口的逆向回流,蜗舌间隙中存在着间隙涡,本文同时给出了一些典型位置上的速度和静压沿轴向的分布曲线,为验证本计算方法的可靠性,计算的流量和压力特性曲线和实验结果进行了比较,吻合良好。
Three-dimensional numerical analysis was carried out for a forward curved multiblade fan, the results showed that the maximal pressure in the volute distributed at different circumferential position along the axial direction. An inlet vortex existed at upstream of the tongue in the interior region of impeller. There existed obvious reverse flow from the blade outlet to the blade inner region near the tongue; and a clearance vortex existed at the tongue clearance. The velocity and static pressure distribution along the axial direction at some typical point were given. To validate the numerical methods, the calculated pressure characteristic curve was compared with the experimental data, they has good agreement.
出处
《工程热物理学报》
EI
CAS
CSCD
北大核心
2003年第3期419-422,共4页
Journal of Engineering Thermophysics
关键词
CFD
多翼离心分机
三维
数值分析
CFD multiblade fan
three-dimensional
numerical analysis
