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http://dx.doi.org/10.3795/KSME-B.2015.39.5.435

Shape Optimization of High Power Centrifugal Compressor Using Multi-Objective Optimal Method  

Kang, Hyun Su (School of Mechanical Engineering, SungKyunKwan Univ.)
Lee, Jeong Min (School of Mechanical Engineering, SungKyunKwan Univ.)
Kim, Youn Jea (School of Mechanical Engineering, SungKyunKwan Univ.)
Publication Information
Transactions of the Korean Society of Mechanical Engineers B / v.39, no.5, 2015 , pp. 435-441 More about this Journal
Abstract
In this study, a method for optimal design of impeller and diffuser blades in the centrifugal compressor using response surface method (RSM) and multi-objective genetic algorithm (MOGA) was evaluated. A numerical simulation was conducted using ANSYS CFX with various values of impeller and diffuser parameters, which consist of leading edge (LE) angle, trailing edge (TE) angle, and blade thickness. Each of the parameters was divided into three levels. A total of 45 design points were planned using central composite design (CCD), which is one of the design of experiment (DOE) techniques. Response surfaces that were generated on the basis of the results of DOE were used to determine the optimal shape of impeller and diffuser blade. The entire process of optimization was conducted using ANSYS Design Xplorer (DX). Through the optimization, isentropic efficiency and pressure recovery coefficient, which are the main performance parameters of the centrifugal compressor, were increased by 0.3 and 5, respectively.
Keywords
Centrifugal Compressor; Shape Optimization; Response Surface Method; Isentropic Efficiency; Pressure Recovery Coefficient;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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