高压比离心叶轮气动强度多学科优化与知识挖掘

李琛玺; 王静; 宋立明; 李军; 丰镇平

doi:10.7652/xjtuxb201705015

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高压比离心叶轮气动强度多学科优化与知识挖掘

更新时间：2025-07-09

- 高压比离心叶轮气动强度多学科优化与知识挖掘
- Aero-Mechanical Multidisciplinary Optimization and Knowledge Discovery of High Pressure Ratio Centrifugal Impeller
- 西安交通大学学报 2017年51卷第5期页码：102-111
- 作者机构：
  
  西安交通大学能源与动力工程学院,西安,710049
- 作者简介：
- 基金信息：
- DOI：10.7652/xjtuxb201705015
  中图分类号： TK47
- 网络首发：2017-05-10，
  
  纸质出版：2017
- 稿件说明：
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李琛玺, 王静, 宋立明, 等. 高压比离心叶轮气动强度多学科优化与知识挖掘[J]. 西安交通大学学报, 2017,51(5):102-111.

Aero-Mechanical Multidisciplinary Optimization and Knowledge Discovery of High Pressure Ratio Centrifugal Impeller[J]. 2017, 51(5): 102-111.
李琛玺, 王静, 宋立明, 等. 高压比离心叶轮气动强度多学科优化与知识挖掘[J]. 西安交通大学学报, 2017,51(5):102-111. DOI： 10.7652/xjtuxb201705015.

Aero-Mechanical Multidisciplinary Optimization and Knowledge Discovery of High Pressure Ratio Centrifugal Impeller[J]. 2017, 51(5): 102-111. DOI： 10.7652/xjtuxb201705015.

摘要

通过引入数据挖掘技术

耦合RANS方程求解技术、有限元分析方法、自适应多目标差分进化算法和非均匀B样条曲面造型方法

提出了高压比离心叶轮多学科多目标设计优化方法。该方法包括:利用研发的优化平台获取给定设计空间内性能最优的解

涉及优化算法、参数化方法、约束处理和多学科性能评估4个模块

前3个模块通过自主编程完成

最后1个模块通过编写软件接口、利用NUMECA和ANSYS软件生成; 利用数据挖掘技术

如总变差分析

对设计空间进行知识挖掘

由此识别出对性能影响显著的变量。以等熵效率最高和叶轮表面最大离心应力最小为目标

开展了典型高压比离心叶轮SRV2-O的优化设计

优化后等熵效率提高了2.00%

最大应力降低了2.08%; 通过对优化设计的分析和对设计空间的知识挖掘知

对类似高压比离心叶轮进行设计时

应重点控制扩压段轮盖的设计以减小叶顶泄漏流的影响

通过减小流动通道面积以减小泄漏流的损失。该结果可为类似离心叶轮设计提供借鉴。

Abstract

Integrating data mining techniques

RANS solver technique

finite element method(FEM)

self-adaptive multi-objective differential evolution(SMODE)algorithm and B-spline surface parameterization method

a multidisciplinary and multi-objective design optimization strategy for centrifugal impeller is proposed to obtain the optimal properties in given design space on an optimization platform. This strategy includes modules optimization algorithm

parameteriz-ation method

constraint handling and multidisciplinary assessment. The first three modules are established by self-coding program

and the last module is implemented by the software NUMECA and ANSYS. Data mining techniques

like total variation analysis

are introduced to discover the significant variables in design space

the design optimization is carried out for maximizing isentropic efficiency and minimizing the maximum stress in impeller surface of a typical high pressure ratio centrifugal impeller SRV2-O. After optimization

the efficiency increases by 2.0% and the maximum stress lowers by 2.08%. Knowledge discovery of design space is carried out

and the effects of design variables on aerodynamic and mechanical performances of impeller are also analyzed. It is indicated that for centrifugal impeller with similar high pressure ratio

the shroud of diffuser section ought to be mainly controlled in design to weaken tip leakage flow

and flow passage area ought to be reduced to decrease leakage flow loss.

关键词

Keywords

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