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research-article

Design and numerical analysis of a vane shaped receiver hole in a cover-plate pre-swirl system

[+] Author and Article Information
Yuxin Liu

School of Power and Energy, Northwestern Polytechnical University, 127 West Youyi Road, Xi'an, 710072, China
liuyuxin_lz@163.com

Gaowen Liu

School of Power and Energy, Northwestern Polytechnical University, 127 West Youyi Road, Xi'an, 710072, China
gwliu@nwpu.edu.cn

Xiaozhi Kong

School of Power and Energy, Northwestern Polytechnical University, 127 West Youyi Road, Xi'an, 710072, China
kongxiaozhi_lx@163.com

Yangang Wang

School of Power and Energy, Northwestern Polytechnical University, 127 West Youyi Road, Xi'an, 710072, China
wyg704@nwpu.edu.cn

1Corresponding author.

ASME doi:10.1115/1.4041628 History: Received February 27, 2018; Revised September 27, 2018

Abstract

In a cover-plate system, rotating receiver hole is an important component, because its structure and characteristics directly influence the aerodynamic loss and cooling performance in the pre-swirl system. A new type of vane shaped (VS) receiver hole was designed and presented in this paper. Numerical simulations were carried out to compare the performances among high radius direct transfer system (Model-A), low radius cover-plate system with simple drilled receiver holes (model-B) and low radius cover-plate system with VS receiver holes (Model-C). Results indicate that for the operating conditions simulated here, temperature drop effectiveness of the high radius pre-swirl system is much better compared to the low radius system with simple drilled (SD) receiver hole. With VS receiver hole, the aerodynamic loss in Model-C is the lowest. The non-dimensional static pressure at pre-swirl nozzle exit is only 0.93, around 10% lower than Model-B. Moreover, it has a more remarkable cooling performance. The temperature drop effectiveness of Model-C can be as high as 0.52, around 67.7% higher compared to Model-A. The system with VS receiver hole could not only realize the advantage of low leakage flow as a low radius system, but also could achieve higher temperature drop compared to high radius system.

Copyright (c) 2018 by ASME
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