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.
The key structural parameters of inlet duct are optimized to improve the flow performance of inlet duct of water-jet propulsion.The inclination angleαand radius RT are optimized for higher efficiencyηof inlet duct,higher weighted average angleθof outlet velocity and non-uniformity coefficientξof 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.
作者
张富毅
吴钦
赵晓阳
刘影
王国玉
ZHANG Fuyi;WU Qin;ZHAO Xiaoyang;LIU Ying;WANG Guoyu(School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China)
出处
《兵工学报》
EI
CAS
CSCD
北大核心
2020年第10期2071-2080,共10页
Acta Armamentarii
基金
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)。
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
water-jet propulsion
inlet duct
optimization design
response surface method
multi-objective genetic algorithm
作者简介
张富毅(1996—),男,硕士研究生,E-mail:18158836915@qq.com;通信作者:吴钦(1989—),女,助理教授,E-mail:wuqin919@bit.edu.cn。
