不同进口雷诺数下双旋流杯下游回流区特征

于博文; 张弛; 杨谦; 许全宏; 林宇震

doi:10.13224/j.cnki.jasp.2016.04.008

不同进口雷诺数下双旋流杯下游回流区特征

doi: 10.13224/j.cnki.jasp.2016.04.008

北京航空航天大学能源与动力工程学院航空发动机气动热力国家级重点实验室, 北京 100191

详细信息

作者简介:
于博文(1990-),男,山东济宁人,硕士生,研究领域为燃气轮机燃烧及传热传质.E-mail:dtyubw90@163.com

中图分类号: V231.2
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- 被引次数: 0
出版历程
- 收稿日期: 2014-07-24
- 刊出日期: 2016-04-28

Characteristics of the recirculation zone downstream a dual-swirl cup at varied inlet Reynolds numbers

National Key Laboratory of Science and Technology on Aero-Engine Aero-thermodynamics, School of Energy and Power Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China

摘要

摘要: 为了分析旋流杯下游流场结构对航空燃气轮机燃烧室性能影响的作用,利用PIV(激光粒子测速仪)技术,在常温常压下对双旋流杯下游冷态流场进行测试,研究进口雷诺数对双旋流杯下游回流区的影响.试验结果表明:当进口雷诺数较低时,下游流场结构为收扩型;当进口雷诺数增大到25000后,流场结构变为扩张型;之后继续增加进口雷诺数,回流区流场结构不再改变,但回流区内的无量纲回流速度会随之增加.
- 航空燃气轮机 /
- 燃烧室 /
- 旋流杯 /
- 回流区 /
- 雷诺数
Abstract: To analyze the role of the flow structure downstream the swirl cup on the performance of aero gas turbine combustors, PIV (particle image velocimetry) was used to measure the non-reacting flow field downstream a dual-swirl cup under ambient pressure and temperature, and the effect of the inlet Reynolds number on the recirculation zone downstream a dual-swirl cup was studied. The experimental results indicate that the flow structure downstream is a converge-diverge type when the inlet Reynolds number is low. As the inlet Reynolds number increases to 25000, the flow structure turns to a diverge type.Then the flow structure of recirculation zone remains unchanged with increasing inlet Reynolds number, but the normalized velocities in the recirculation zone would increase accordingly.
- aero gas turbine /
- combustor /
- swirl cup /
- recirculation zone /
- Reynolds number

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参考文献(18)

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