基于空化模型的多级离心泵汽蚀性能分析  

Analysis on Cavitation Performance in Multi-stage Centrifugal Pump Based on Cavitation Model

作　　者：黄思[1] 管俊[1] 

机构地区：[1]华南理工大学,广东广州510640

出　　处：《流体机械》2011年第1期29-31,28,共4页Fluid Machinery

摘　　要：应用Rayle igh-P lesset气泡方程建立离心泵空化模型,并与气液两相湍流控制方程耦合求解,得到了多级离心泵内三维湍流场及气液相分布,捕捉到气泡的初生、发展及冷凝过程。计算了不同流量下的离心泵的必需汽蚀余量并与实测结果进行了对比分析。A cavitation analysis model for centrifugal pump is developed based on the Rayleigh-Plesset bubble equation.The 3-D turbulent flow field and gas-liquid phase distribution in a multi-stage centrifugal pump are computed by solving the bubble equation coupled with two-phase turbulent governing equations.The process of bubble vaporization,growing and condensation are simulated and visualized.The cavitation model and simulation are validated by comparing numerical solutions with tested curve of Q-NPSHr for the pump.

关 键 词：多级离心泵 空化模型 汽蚀性能 模拟计算 

分 类 号：TH311[机械工程—机械制造及自动化]