双级对转压气机全工况优化设计

张鹏; 刘波; 曹志远; 史磊

doi:10.13224/j.cnki.jasp.2014.10.021

双级对转压气机全工况优化设计

doi: 10.13224/j.cnki.jasp.2014.10.021

西北工业大学动力与能源学院, 西安 710072

基金项目:

国家自然科学基金（51236006）

详细信息

作者简介:
张鹏（1988- ），男，湖北黄冈人，博士生，主要从事压气机气动优化设计.

中图分类号: V231.3
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出版历程
- 收稿日期: 2013-06-28
- 刊出日期: 2014-10-28

Optimization design of a two-stage counter-rotating compressor under overall working conditions

School of Power and Energy, Northwestern Polytechnical University, Xi'an 710072, China

摘要

摘要: 为全面提升对转压气机气动性能，以某双级对转压气机为研究对象，基于人工神经网络与遗传算法，针对转子2叶片在整机环境下进行全工况优化设计，并对优化前后几何形状、总体性能及流场结构进行了对比分析.结果表明：优化后对转压气机全工况范围内等熵效率及压比均得到提升，同时流量范围有所增大.在设计点整机等熵效率提高0.3%，近失速点整机等熵效率提高1.5%，喘振裕度上升了6.37%，稳定工作范围得到显著扩大.优化后转子1全工况范围内等熵效率和压比特性变化不大，而转子2全工况范围内等熵效率和压比均有较大提高，其中在设计点转子2等熵效率上升1%，近失速点转子2等熵效率上升2.5%；在近失速点，优化后转子1、转子2、出口导叶（OGV）尖部流场显著改善.
- 对转 /
- 压气机 /
- 全工况 /
- 优化设计 /
- 等熵效率
Abstract: In order to improve aerodynamic performance of the counter-rotating compressor in an all-round way, overall working conditions optimization design was carried out on the Rotor 2 of a two-stage counter-rotating compressor in multistage environment based on artificial neural network and genetic algorithm. The changes of geometry, overall performance and flow field were compared and analyzed. Results show that: after the optimization, the overall isentropic efficiency and pressure ratio of the counter-rotating compressor are both improved, meanwhile the range of mass flow is widened. The isentropic efficiency of the counter-rotating compressor increases by 0.3% on the design point, increases by 1.5% near the stall point, and the surge margin increases by 6.37%. After the optimization, the overall isentropic efficiency and pressure ratio of the Rotor 1 are almost unchanged, but those of Rotor 2 are raised much. The isentropic efficiency of Rotor 2 improves by 1% on the design point, and the isentropic efficiency is improved by 2.5% near the stall point. Also, the flow fields of Rotor 1, Rotor 2 and outlet guide vane (OGV) at the tip are improved remarkably near the stall point.
- counter-rotating /
- compressor /
- overall working conditions /
- optimization design /
- isentropic efficiency

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