中国机械工程Issue(17)：2389-2393,5.DOI:10.3969/j.issn.1004132X.2015.17.020
燃油汽心泵的数值模拟与试验
Numerical Simulation and Experiments of Vapor Core Pump
摘要
Abstract
As a variant of centrifugal pump,fuel VCP shows good application prospects in aero en-gines.The vapor core generating in impeller region had great influences on operation status and per-formance of VCP.Unsteady numerical simulation of VCP was presented herein based on RNG (renor-malization group)κ-ε turbulence model and vapor-liquid two-phase cavitation model.Effects of inlet throttle opening and outlet load on vapor core region were studied.In order to verify the reliability of numerical results,basic characteristics of a prototype pump were tested.Results show that fuel vapor-ization inside the pump occurs at the impeller inlet.The vapor core region gradually expands with the decreasing outlet pressure.When expanding to the blade region,liquid fuel flows into the volute from the pressure side of blade.Other conditions being unchanged,vapor core region rapidly expands when reducing the throttle opening.Efficiency of the VCP is less than 20% at 2 mm throttle opening.The simulation and test errors are within 10%.关键词
汽心泵/汽液两相/进口节流活门/数值模拟Key words
vapor core pump(VCP)/vapor-liquid two-phase/inlet throttle/numerical simulation分类
机械制造引用本文复制引用
于定鹏,王彬,邓卫华,叶志锋..燃油汽心泵的数值模拟与试验[J].中国机械工程,2015,(17):2389-2393,5.基金项目
国家自然科学基金资助项目(51205188) （51205188）
