摘要
基于非定常不可压牛顿流体的控制方程和标准e-k紊流模型,应用SIMPLEC算法,数值模拟了对旋式轴流泵联立全流道在一个完整的转动周期内的三维紊流流场。通过给出全流道中间周向截面的压力与速度等值线图,以及中间干涉面的压力等值线及分布云图,直观地显示了一个转动周期内前置叶轮、后置叶轮及全流道的流场特性变化和干涉情况,表明联立全流道非定常三维紊流场的数值模拟方法是人们认识对旋流场流动与干涉机理经济实用的理论手段。
Based on the unsteady incompressible flow governing equations, the k-Ε turbulence model and the SIMPLEC method, were used to simulate numerically the 3-D turbulent flow through the full flow passage in a Contra-Rotating Axial Flow Pump within a complete rotating period of the impeller. The results, such as the pressure distribution and isolines of velocity on the middle peripheral section and on the midway interaction surface in the flow passage, show respectively the variation of flow field characteristics in the front impeller, rear impeller and full flow passage in one rotating period. It is also indicated that the 3-D unsteady turbulent simulation is effective for understanding the contra-rotating flow field, as well as the interaction mechanism.
出处
《工程力学》
EI
CSCD
北大核心
2004年第3期150-154,共5页
Engineering Mechanics
关键词
轴流泵
对旋
三维非定常紊流模拟
全流道
Computer simulation
Flow of fluids
Impellers
Pumps
Three dimensional
