文章摘要
冀春俊,李春阳,房俊翌,张雪薇,刘君男.叶片厚度分布对流道式叶片性能的影响分析[J].,2019,18(4):321-326
叶片厚度分布对流道式叶片性能的影响分析
Influence of blade thickness distribution on performance of runner blade
投稿时间:2018-12-24  修订日期:2019-05-29
DOI:10.13738/j.issn.1671-8097.018248
中文关键词: 多级离心压缩机  流道式叶片  厚度分布  数值模拟
英文关键词: multistage centrifugal compressor  runner blade  thickness distribution  numerical simulation
基金项目:
作者单位E-mail
冀春俊 大连理工大学 能源与动力学院 906549286@qq.com 
李春阳 大连理工大学 能源与动力学院 906549286@qq.com 
房俊翌 大连理工大学 能源与动力学院  
张雪薇 大连理工大学 能源与动力学院  
刘君男 大连理工大学 能源与动力学院  
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中文摘要:
      基于三维可压缩流体N-S方程和Spalart—Allmaras湍流模型,对多级离心压缩机中间级进行数值计算,研究了不同叶片厚度分布规律对流道式叶片性能的影响。通过分析不同模型级设计工况和变工况的特性及压力场、速度场分布,获得流道式叶片效率和损失分布的变化规律。结果表明:0.6倍厚度(即9.00MM)的叶片有最高的级效率82.82%和最大压比1.483,同原有叶片厚度的模型级相比较,整级效率增加1.46%。流道式叶片厚度的变化对压缩机稳定工况的范围影响不大。从近喘工况到堵塞工况,薄叶片在总体性能上优于厚叶片。在近喘工况下,旋涡区分布于叶片进口吸力面;近堵工况下,旋涡区分布于叶片压力面。
英文摘要:
      Based on the three-dimensional compressible fluid N-S equation and Spalart-Allmaras turbulence model, the numerical calculation of the intermediate stage of multi-stage centrifugal compressor was carried out. The influence of different blade thickness distribution on the performance of the runner blade was studied. By analyzing the characteristics of different model level design conditions and variable working conditions, the pressure field and the velocity field distribution, the variation law of the efficiency and loss distribution of the runner blade was obtained. The results showed that the blade with 0. 6 times thickness (i.e. 9mm) had the highest grade efficiency of 82.82% and the maximum pressure ratio of 1. 483. Compared with the model grade of the original blade thickness, the whole stage efficiency increased by 1. 46%. The change of blade thickness has little effect on range of stable working conditions of compressor. From near surge condition to blockage condition, the overall performance of thin blade is better than that of thick blade. The vortex region is distributed on the inlet suction surface of the blade under the condition of near surge, and on the pressure surface of the blade under the condition of near blockage.
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