基于气腔模型和节流阀模型的离心压缩机喘振数值研究（英文）  

Numerical Investigation of Centrifugal Compressor Surge Based on Plenum Chamber Model and Throttle Valve Model

作　　者：陈雪飞 秦国良 贾诚 李元 Xue-fei Chen;Guo-liang Qin;Cheng Jia;Yuan Li

机构地区：[1]School of Energy and Power Engineering,Xi'an Jiaotong University,Xi'an 710049,P.R.China [2]Sinopec Si Chuan to Eastern China Transmission Gas Pipeline Co.,Ltd.

出　　处：《风机技术》2019年第5期35-39,共5页Chinese Journal of Turbomachinery

基　　金：The National Key Basic Research Program of China(No.2012CB026000);the National Natural Science Foundation of China(No.51776155)

摘　　要：In this paper,a correlation model between centrifugal compressor and its piping system is built based on plenum chamber model and throttle valve model.This model could be used to conduct numerical analysis of compressor systems from steady to surge operating points.Three dimensional unsteady numerical simulations were performed to predict the performance of a centrifugal compressor.The flow structures in blade passage and diffuser were plotted and analyzed.The fluctuations of pressure and mass flow rate over time at the outlet of diffuser are obtained at surge condition.The characteristic changes of compressor-pipe network under the surge condition were carried out,and the effects of model characteristics including valve coefficient and backpressure on surge were analyzed.In this paper, a correlation model between centrifugal compressor and its piping system is built based on plenum chamber model and throttle valve model. This model could be used to conduct numerical analysis of compressor systems from steady to surge operating points. Three dimensional unsteady numerical simulations were performed to predict the performance of a centrifugal compressor. The flow structures in blade passage and diffuser were plotted and analyzed. The fluctuations of pressure and mass flow rate over time at the outlet of diffuser are obtained at surge condition. The characteristic changes of compressor-pipe network under the surge condition were carried out,and the effects of model characteristics including valve coefficient and backpressure on surge were analyzed.

关 键 词：CORRELATION Model NUMERICAL Investigation PIPE Network VALVE COEFFICIENT Backpressure 

分 类 号：TH4[机械工程—机械制造及自动化]