无堵塞离心泵内部三维固液两相湍流场数值模拟  

3-D CALCULATION OF SOLID-LIQUID TWO-PHASE TURBULENT FLOW WITHIN A NON-CLOGGING CENTRIFUGAL PUMP

作　　者：袁寿其[1] 李昳[2] 何朝辉 

机构地区：[1]江苏大学,镇江212013 [2]浙江工程学院 [3]浙江省机电设计研究院

出　　处：《机械工程学报》2003年第7期18-22,共5页Journal of Mechanical Engineering

基　　金：国家自然科学基金(50279011)

摘　　要：针对无堵塞泵叶轮内部流场的特点,选用颗粒拟流体的κ-ε-Α_p模型模拟两相湍流,基于SIMPLEC算法建立压力修正方程来满足连续性方程和动量方程间的耦合关系,并由此建立了两相湍流的时均控制方程组,采用GEM-CHIP算法编制程序对叶轮内流进行模拟,并实现了模拟结果的可视化。模拟结果揭示了无堵塞泵叶轮内部流动的某些特征:叶轮前盖板一吸力面处存在射流—尾迹区,流体相与颗粒相之间有速度滑移,且滑移值随流道逐渐降低。A k-ε-A(?) model is used to simulate two-phase turbu- lent flow, and pressure-correction equation is achieved to couple the continuity equation and the momentum equations according to SIMPLEC. Thus time-averaged governing equations of which are developed. On the basis of the GEMCHIP algorithm, a program to calculate the internal flow within the pump impellers is designed, and the calculating results are displayed into some figures. The simulated results exhibit: there exist a jet-wake structure around the shroud-suction side area, and a relative velocity slip between the solid and liquid which decreases gradually along the passage.

关 键 词：无堵塞泵 两相流 湍流 数值模拟 离心泵 流场 

分 类 号：TH311[机械工程—机械制造及自动化] TB115[理学—数学]