轴流泵端壁间隙流动特性的数值研究  

NUMERICAL STUDY FOR BEHAVIOROF TIP CLEARANCE FLOWIN AXIAL-FLOW PUMP

作　　者：杨昌明[1] 陈次昌[2] 王金诺[3] 宋文武[2] 夏鹏飞[2] 

机构地区：[1]西南交通大学工程研究所,成都610031 [2]四川工业学院 [3]西南交通大学

出　　处：《机械工程学报》2003年第9期49-51,共3页Journal of Mechanical Engineering

基　　金：国家自然科学基金(59979017)

摘　　要：基于N-S方程,标准k-ε模型和SIMPLEC算法,在三种叶端间隙、三种工况条件下,对轴流泵端壁间隙流动进行了数值模拟。重点考察了叶端间隙流动对叶轮出口流场及性能的影响。数值结果表明,间隙增加,扬程下降,特别是越在小流量工况下越明显。Three-dimensional tip clearance flow in axial-flow pump is simulated based on N-S equations, standard k -e turbulence model, and SIMPLEC method, with various tip clearances of blade and work conditions. The influence of clearance flow on flow fields and performance of the rotor is investigated emphatically. The numerical result shows increasing the tip clearance will reduce hydrostatic head, especially at small flow rate.

关 键 词：轴流泵 间隙流动 数值模拟 N-S方程 标准κ-ε模型 SIMPLEC算法 

分 类 号：TH312[机械工程—机械制造及自动化] TB115[理学—数学]