Optimization of life-reliability-based multidisciplinary design of centrifugal impeller

被引：0
|
作者：
Li L. [1 ]
Li Y. [1 ]
Yang Z. [1 ,2 ]
Yuan T. [1 ]
Yang W. [1 ]
Chen T. [1 ]
机构：
[1] School of Mechanics, Civil Engineering and Architecture, Northwestern Polytechnincal University, Xi'an
[2] Power Engineering Technology Department, China Ship Research and Development Academy, Beijing
来源：
Harbin Gongcheng Daxue Xuebao/Journal of Harbin Engineering University | 2020年 / 41卷 / 04期
关键词：
Centrifugal impeller; Design of experiment; Geometry parametric design; Kriging surrogate model; Life reliability; Multidisciplinary coupling; Multidisciplinary design optimization; Non-uniform rational B-spline;
D O I：
10.11990/jheu.201901066
中图分类号：
学科分类号：
摘要：
To optimize the centrifugal impeller with the characteristics of the multi-field coupling, in this work we developed a multidisciplinary reliability design-optimization method that considers the aerodynamics, heat transfer, strength, life, reliability, and effect of uncertainties. A parametric model was established for the centrifugal impeller on the basis of the non-uniform rational B-spline and feature modeling technology. Based on the transfer of the coupling information, we implemented a multidisciplinary analysis of the centrifugal impeller, including its aerodynamics, heat transfer, strength, and life to experimentally identify the main design parameters that influence the centrifugal impeller's aerodynamic performance and life. We selected seven parameters as design variables and, using a surrogate model, we optimized the performance of the centrifugal impeller using life reliability as a constraint and the isentropic efficiency and total pressure ratio as objectives. The results show that the entropy efficiency and total pressure ratio of the centrifugal impeller were increased by 3.4% and 6.2%, respectively, and the maximum Mises stress was reduced by 10.3%, while satisfying the life reliability constraint. The improvement in the performance of the centrifugal impeller proves the effectiveness of the developed method. Copyright ©2020 Journal of Harbin Engineering University.
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页码：530 / 534
页数：4
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