Numerical Study of Effect of Compressor Swirling Flow on Combustor Design in a MTE

• Published in: Journal of thermal science 2017-08, Vol.26 (4), p.349-354
• Main Authors: Mu, Yong, Wang, Chengdong, Liu, Cunxi, Liu, Fuqiang, Hu, Chunyan, Xu, Gang, Zhu, Junqiang
• Format: Article
• Language: English
• Subjects: Aerodynamics; Centrifugal compressors; Classical and Continuum Physics; Combustion chambers; Compressed air; Computational fluid dynamics; Diffusers; Engineering Fluid Dynamics; Engineering Thermodynamics; Heat and Mass Transfer; Physics; Physics and Astronomy; Pressure loss; Swirling; Temperature distribution; 压缩机; 压缩空气; 数值研究; 旋转流; 温度分布; 燃烧器; 计算流体力学; 设计
• ISSN: 1003-2169; 1993-033X
• DOI: 10.1007/s11630-017-0948-1

An effect of the swirling flow on the combustion performance is studied by the computational fluid dynamics （CFD） in a micro-gas turbine with a centrifugal compressor, dump diffuser and forward-flow combustor. The dis- tributions of air mass and the Temperature Pattern Factor （as： Overall Temperature Distribution Factor -OTDF） in outlet are investigated with two different swirling angles of compressed air as 0° and 15° in three combustors. The results show that the influences of swirling flow on the air distribution and OTDF cannot be neglected. Compared with no-swirling flow, the air through outer liner is more, and the air through the inner liner is less, and the pres- sure loss is bigger under the swirling condition in the same combustor. The Temperature Pattern Factor changes under the different swirling conditions.