摘要
通过求解包括进水管、叶轮、泵体等过流部件在内的水泵流道内的三维稳定雷诺平均Navier-Stokes方程,获得水泵内部的流场分布特征。对计算结果与实测结果进行了对比。表明计算所得流量-扬程曲线与实测值吻合良好;流量-效率曲线在小流量相差较大,在大流量吻合得较好。虽然在部分运行工况模拟计算不是很准确,但计算的各工况压力、速度分布以及整个流道的其它流动特性,对分析挖泥泵的各种流动问题很有帮助。
How field of centrifugal pump （Pump flow passage includes suction pipe, impeller and volute casing. ） was obtained by solving the Reynolds average Navier-Stokes equation. Computational performance curve was compared with measuring curve. The result demonstrates that the computational head versus discharge curve is coincident with the measuring curve; the computational efficiency curve is coincident with the measuring curve in large-capacity area, in lower-capacity area they cannot keep coincident very well. Though the simulation result is not accurate highly in part operating domains, the pressure and velocity distribution and other flow characteristics in whole flow path in all operating domain is also useful to analyze flow problems in dredge centrifugal pump.
出处
《流体机械》
CSCD
北大核心
2005年第12期19-22,共4页
Fluid Machinery
关键词
泥泵
CFD
实测
计算精度
dredge pump
CFD
measurement
simulation accuracy
