摘要
为探索超临界二氧化碳(S-CO_(2))离心压缩机优化设计方法,以某S-CO_(2)离心压缩机为研究对象,通过数值模拟探究其气动特性规律,并进行流场分析,寻找需要优化的结构参数。首先对S-CO_(2)离心压缩机进行参数化建模,以等熵效率最大为优化目标,采用Kriging近似模型结合自适应模拟退火算法,对进口叶片安装角、出口叶片安装角、叶片包角、叶片前缘倾角以及叶顶间隙同时进行优化。优化结果表明:优化后的S-CO_(2)离心压缩机在设计工况下等熵效率和压比分别提升了2.39%和3.85%,且不同质量流量下压缩机的等熵效率和压比均得到了提高。
To explore optimization design methods for supercritical carbon dioxide(S-CO_(2))centrifugal compressors,a particular S-CO_(2) centrifugal compressor impeller is studied.Through numerical simulation,its aerodynamic characteristics are investigated,and flow field analysis is conducted to identify structural parameters that require optimization.Initially,the S-CO_(2) centrifugal compressor is modeled parametrically,with the objective of maximizing isentropic efficiency.A Kriging surrogate model combined with an adaptive simulated annealing algorithm is used to simultaneously optimize several parameters,including the inlet blade angle,outlet blade angle,blade wrap angle,blade leading edge angle,and blade tip clearance.The optimization results show that the optimized S-CO_(2) centrifugal compressor achieves an increase of 2.39%in isentropic efficiency and 3.85%in pressure ratio under design conditions,with improvements in both isentropic efficiency and pressure ratio across different mass flow rates.
作者
张亚洲
孙玉伟
吕军帅
陈子眩
秦天阳
ZHANG Ya-zhou;SUN Yu-we;LYU Jun-shuai;CHEN Zi-xuan;QIN Tian-yang(School of Naval Architecture,Ocean and Energy Power Engineering,Wuhan University of Technology,Wuhan 430063,China;State Key Laboratory of Maritime Technology and Safety,Wuhan University of Technology,Wuhan 430063,China;National Engineering Research Center for Water Transport Safety(WTS Center,MoST),Wuhan 430063,China;School of Transportation and Logistics Engineering,Wuhan University of Technology,Wuhan 430063,China)
出处
《汽轮机技术》
北大核心
2024年第6期439-444,共6页
Turbine Technology
基金
工信部高技术船舶科研项目(工信部装函[2017]614号)。
