Flow and heat transfer in swirl tubes-A review

被引:38
|
作者
Seibold, Florian [1 ]
Ligrani, Phillip [2 ]
Weigand, Bernhard [1 ]
机构
[1] Univ Stuttgart, Inst Aerosp Thermodynam, Stuttgart, Germany
[2] Univ Alabama, Huntsville, AL 35899 USA
关键词
Review; Cyclone cooling; Swirl tube; Swirl chamber; Vortex chamber; Flow field analysis; Heat transfer; Cooling performance; Numerical predictability; TRANSFER ENHANCEMENT; VORTEX BREAKDOWN; PRESSURE LOSS; TEMPERATURE SEPARATION; ENERGY SEPARATION; CHAMBER; DECAY; IMPINGEMENT; INSTABILITY; SIMULATION;
D O I
10.1016/j.ijheatmasstransfer.2021.122455
中图分类号
O414.1 [热力学];
学科分类号
摘要
The development of modern gas turbines for aircraft propulsion and power generation demands ever-increasing efficiency, which can be achieved by rising the turbine inlet temperature. Therefore, turbine components and especially the leading edge of turbine blades are exposed to particular high thermal loads with temperatures that are well above the melting point of the material. As a result, efficient cool -ing techniques are essential. Swirling flows in cyclone cooling systems are a promising technique for internal turbine blade leading edge cooling since they promise high heat transfer rates in combination with relatively uniform heat transfer distributions. The current paper presents a review on cyclone cooling with detailed evaluation of the flow field and heat transfer. Content is focussed on the analysis of basic physical processes and on comparisons of specific design features of swirl tubes. A large data set was collected from literature that allows to elucidate the cooling performance of such systems in comparison to other traditional techniques. Additionally, the numerical predictability of different turbulence modeling approaches is assessed. The review concludes with a summary on open questions that require attention in future cyclone cooling research. (c) 2022 Elsevier Ltd. All rights reserved.
引用
收藏
页数:26
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