Numerical investigation on effect of various pump rotational speeds on performance of centrifugal pump based on CFD analysis technique  

作　　者：Ahmed Ramadhan Al-Obaidi 

机构地区：[1]Department of Mechanical Engineering,Faculty of Engineering Mustansiriyah University,Baghdad,Iraq

出　　处：《International Journal of Modeling, Simulation, and Scientific Computing》2021年第5期210-233,共24页建模、仿真和科学计算国际期刊（英文）

摘　　要：In this study,the flow structure and effect of different pump rotational speeds on a centrifugal pump’s performance are experimentally and numerically investigated.The internal flow field pattern within the pump has been analyzed and discussed using the CFD technique.The numerical results are compared with experimental data under a wide range of operating conditions.The comparison results between them have indicated a considerable agreement.The pressure variations are gradually increasing from inlet to outlet impeller of the pump.The results note that when the impeller rotates near the tongue region,the pressure in this region was higher than in other parts.Also,the interaction between the impeller and volute tongue region is actually according to the impeller blades’relative position concerning the tongue region.Furthermore,the pressure and velocity variations within a centrifugal pump increase with rotational impeller speed.

关 键 词：Centrifugal pump pressure variations velocity variations pump rotational speed CFD 

分 类 号：TH3[机械工程—机械制造及自动化]