Multi-point Optimization of Recirculation Flow Type Casing Treatment in Centrifugal Compressors

作     者：Min Thaw Tun Daisaku Sakaguchi 

作者机构：Nagasaki University 1-14 Bunkyo-machi 852-8521 Nagasaki Japan 

基　　金：financially supported by Harada memorial foundation and Japan Science and Technology Agency 

出 版 物：《Journal of Thermal Science》 (热科学学报（英文版）)

年 卷 期：2016年第25卷第3期

页      码：231-241页

摘      要：High-pressure ratio and wide operating range are highly required for a turbocharger in diesel engines. A recirculation flow type casing treatment is effective for flow range enhancement of centrifugal compressors. Two ring grooves on a suction pipe and a shroud casing wall are connected by means of an annular passage and stable recirculation flow is formed at small flow rates from the downstream groove toward the upstream groove through the annular bypass. The shape of baseline recirculation flow type casing is modified and optimized by using a multi-point optimization code with a metamodel assisted evolutionary algorithm embedding a commercial CFD code CFX from ANSYS. The numerical optimization results give the optimized design of casing with improving adiabatic efficiency in wide operating flow rate range. Sensitivity analysis of design parameters as a function of efficiency has been performed. R is found that the optimized casing design provides optimized recirculation flow rate, in which an increment of entropy rise is minimized at grooves and passages of the rotating impeller.

主 题 词：Centrifugal Compressor Casing Treatment Multi-point Optimization Turbocharger 

学科分类：080704[080704] 08[工学] 0807[工学-电子信息类] 0837[0837] 

核心收录：

D　O　I：10.1007/s11630-016-0855-x

馆 藏 号：203243879...