摘要
基于Navier-Stoke方程和标准k-ε湍流模型,采用SIMPLEC算法对一空间导叶式离心泵进行全流道三维湍流数值模拟,详细分析了导叶式长轴泵在设计工况下空间导叶内部的流场分布。结果表明,流体途经叶轮和空间导叶之间的环形空间时产生较大的冲击损失;导叶叶片表面速度沿着流道呈现减小-增大-减小的趋势,而压力沿着流道呈现增大-减小-增大的趋势;计算结果和实验结果比较吻合,从而证明了计算结果的正确性,研究结果对工程应用具有一定的参考价值。
Based on Navier-Stoke equations and standard κ-ε turbulence model, using SIMPLEC algorithm, a three-dimensional nu- merical simulation of turbulent flow in a centrifugal pump with space vane is conducted. The internal flow field of space vane of guide vane long-shaft pump under designed operating conditions is analyzed in detail. The results show that the fluid passing through annu- lar space between the impeller and the space vane has greater impact losses; the surface velocity of vane blade along the flow channel shows decreasing-increasing-decreasing trend, while the pressure along the flow channel presents increasing-decreasing-increasing trend. The simulation results and the experimental results coincide well, which proves the correctness of the results..The research results have certain reference value for engineering application.
出处
《节水灌溉》
北大核心
2010年第8期23-26,共4页
Water Saving Irrigation
基金
国家自然科学基金项目(50776040)
关键词
长轴泵
空间导叶
流场分析
数值计算
long shaft pump
space vane
flow field analysis
numerical calculation
