摘要
以设计的某对转压气机级为研究对象,应用F INE/TURBO和CFX软件研究了设计转速、典型工作状态下该压气机的性能和流场细微结构,为进一步优化对转压气机叶片设计提供了依据。计算结果表明:在压气机中反向旋转转子叶片布局设计较好的前提下,对转技术可以在较小的空间里实现较高的压比,从而大幅度提高发动机的推重比;文中给出的对转压气机设计局部流场结构还未达到最优,三维叶片还需要进一步改进,主要表现在一级转子根部和尖部附面层较厚,并伴随有分离现象;二级转子尖部分离流动强烈,使得下游叶片来流发生较大畸变;出口导叶设计尚不理想,集中表现为在根部和尖部有较弱的分离流。
To our best knowledge, even in the rare papers in open literature concerning counter-rotating compressor, we have not found detailed technical information about its flow field. Our aim is to present the results of our effort at developing such information for a dual stage counter-rotating compressor, which we have investigated by numerical simulation. In designing and optimizing counter-rotating compressor blade, we needed the performance and detailed flow structure of counter-rotating compressor under design rotating speed and typical working condition; we obtained what we needed with two kinds of commercial software. （1） NUMECA solver FiNE/Turbo, （2） CFX. Numerical results show preliminarily that the pm （pressure ratio p vs mass flow rate m） performance curves in Fig. 1 of the full paper obtained with the above-mentioned two kinds of software show good agreement. The p-rn curve shows further preliminarily that counter rotating technique is effective in raising the pressure ratio in a well laid out very limited space, thus raising the weight-thrust ratio of aero-engine.
出处
《西北工业大学学报》
EI
CAS
CSCD
北大核心
2006年第1期97-101,共5页
Journal of Northwestern Polytechnical University
基金
西北工业大学青年创新基金资助
关键词
对转技术
压气机
特性
counter-rotating technique, compressor, performance curve
