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兵工学报 ›› 2020, Vol. 41 ›› Issue (10): 2071-2080.doi: 10.3969/j.issn.1000-1093.2020.10.017

• 论文 • 上一篇    下一篇

基于响应面方法的喷水推进器进水流道多目标优化

张富毅, 吴钦, 赵晓阳, 刘影, 王国玉   

  1. (北京理工大学 机械与车辆学院, 北京 100081)
  • 上线日期:2020-11-25
  • 通讯作者: 吴钦(1989—),女,助理教授 E-mail:wuqin919@bit.edu.cn
  • 作者简介:张富毅(1996—), 男, 硕士研究生。 E-mail: 18158836915@qq.com
  • 基金资助:
    流体机械及工程四川省重点实验室(西华大学)开放课题项目(szjj2018-124、szjj2019-024); 国家自然科学基金项目(51839001、51679005)

Multi-objective Optimization of Inlet Duct of Water-jet Propulsion Based on Response Surface Method

ZHANG Fuyi, WU Qin, ZHAO Xiaoyang, LIU Ying, WANG Guoyu   

  1. (School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China)
  • Online:2020-11-25

摘要: 为提高喷水推进器进水流道的流动性能,在给定进水流道出口直径D、流道高度H和流道总长度L等条件下,针对目标变量流道效率η、出口速度加权平均角θ和出口速度不均匀系数ξ,基于响应面方法对倾斜角α和过渡段半径RT进行优化设计。采用中心复合设计法和拉丁超立方法生成35组样本点,建立目标变量随设计变量变化的响应面模型,进行局部敏感性和全局敏感性分析,发现倾斜角α对不同目标变量的影响程度均高于过渡段半径RT. 采用多目标遗传算法对η、θ和ξ进行优化分析,得到满足条件的Pareto解。研究结果表明:优化之后,η从91.2%提高至94.1%,θ从82.5°提高至87.1°,ξ从0.152降低至0.068.

关键词: 喷水推进器, 进水流道, 优化设计, 响应面方法, 多目标遗传算法

Abstract: The key structural parameters of inlet duct are optimized to improve the flow performance of inlet duct of water-jet propulsion. The inclination angle α and radius RT are optimized for higher efficiency η of inlet duct, higher weighted average angle θ of outlet velocity and non-uniformity coefficient ξ of lower outlet velocity in the cases of given diameter D, height H, and overall length L of inlet duct. There are 35 sets of sample points in design space selected by using central composite design and Latin hypercube sampling design method. Quadratic polynomials are employed to construct a response surface model based on the sample points, which reflects the relationship between design and target variables. The Pareto optimal solution set is obtained by the multi-objective genetic algorithm during the optimization process. Good optimization was obtained.The research results show that the efficiency of duct is increased from 91.2% to 94.1%, the outlet velocity weighted average angle is increased from 82.5° to 87.1°, and the non-uniformity coefficient of outlet velocity is decreased from 0.152 to 0.068.

Key words: water-jetpropulsion, inletduct, optimizationdesign, responsesurfacemethod, multi-objectivegeneticalgorithm

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