分流叶片长度及周向位置对氢气离心压气机气动性能的影响  

Influence of splitting blade length and circumferential position on the aerodynamic performance of hydrogen centrifugal compressor

作　　者：陈春刘 原野 韩剑英 童志庭 CHEN Chunliu;YUAN Ye;HAN Jianying;TONG Zhiting(Tianjin Key Laboratory for Advanced Mechatronic System Design and Intelligent Control,Tianjin University of Technology,Tianjin 300384,China;National Demonstration Center for Experimental Mechanical and Electrical Engineering Education,Tianjin University of Technology,Tianjin 300384,China)

机构地区：[1]天津理工大学天津市先进机电系统设计与智能控制重点实验室,天津300384 [2]天津理工大学机电工程国家级实验教学示范中心,天津300384

出　　处：《天津理工大学学报》2025年第1期29-35,共7页Journal of Tianjin University of Technology

基　　金：国家自然科学基金(51976139)。

摘　　要：为了探究分流叶片长度及周向位置对氢气离心压气机性能的影响机制,利用NUNECA软件对不同分流叶片长度及周向位置的氢气离心压气机模型展开了数值模拟计算,同时深入探究了压气机特性线和内部流场,得到了不同分流叶片长度及周向位置下氢气离心压气机的性能规律。研究结果表明:在叶轮内部添加分流叶片可以降低主叶片压力面的载荷,从而使氢气离心压气机的性能有了一定程度的提高。但是过长的分流叶片会导致与气流的接触面积增大,使得流道内摩擦损失增加,同时也会导致进口出现堵塞,从而降低了压气机的效率和压比。随着分流叶片长度及周向位置系数的增加,叶轮的总压比和等熵效率特性线整体呈现出先上升后下降的趋势。通过对内部流场进行分析,发现当分流叶片长度系数为0.8,周向位置系数为0.5时,叶轮气动性达到最好。In order to investigate the mechanism of the influence of the splitting blade length and circumferential position on the performance of hydrogen centrifugal compressor,the numerical simulations of hydrogen centrifugal compressor models with different structural parameters were carried out using NUNECA software,and the characteristic lines and internal flow fields of the compressor were investigated in depth to obtain the performance law of hydrogen centrifugal compressor with different splitting blade lengths and circumferential positions.The results of the study show that the addition of splitting blade inside the impeller can reduce the load on the pressure surface of the main blade and delay the separation of the attached surface layer,thus improving the performance of the hydrogen centrifugal compressor to a certain extent,but the excessively long splitting blade will lead to an increase in the contact area with the airflow,making the friction loss in the flow channel increase,and also lead to blockage in the inlet,thus reducing the efficiency and pressure ratio of the compressor.With the increase of the splitting blade length and circumferential position coefficient,the total pressure ratio and isentropic efficiency characteristic line of the impeller as a whole show a trend of first rising and then falling,by analyzing the internal flow field,it was found that the best impeller aerodynamic performance was achieved when the splitting blade length coefficient was 0.8 and the circumferential position coefficient was 0.5.

关 键 词：氢气离心压气机 分流叶片 数值模拟 气动性能 

分 类 号：TH452[机械工程—机械制造及自动化]