Effects of convergent impingement holes on leading-edge impingement cooling performance in stationary vanes

被引：0

作者：

Liu, Yusong ^{[1
]}

Zhu, Hua ^{[1
]}

Yan, Biao ^{[1
]}

Li, Liang ^{[1
]}

机构：

[1] School of Energy and Power Engineering, Xi’an Jiaotong University, Xi’an

来源：

Hangkong Dongli Xuebao/Journal of Aerospace Power | 2025年 / 40卷 / 08期

关键词：

comprehensive heat transfer coefficient; convergent impingement holes; flow properties; heat transfer properties; impingement cooling;

D O I：

10.13224/j.cnki.jasp.20230047

中图分类号：

学科分类号：

摘要：

To investigate the parametric impact of the arrangement of the convergent impingement holes on the flow and heat transfer characteristics of the vane leading edge impingement cooling structure，three types of cooling structures with different convergent impingement holes arrangement based on 12 standard impingement holes are established. In this paper，ANSYS CFX was used to stimulate the flow and heat transfer characteristics of the four impingement models. The thermal performance factors of the four structures were also compared and analyzed in detail. The results show that the convergent impingement holes can reduce the flow resistance of cooling air and the coolant flow resistance is smaller with more convergent impingement holes. The cooling structure with 6 convergent impingement holes arranged downstream shows the best heat transfer and the most uniform heat transfer distribution of the target surface. The cooling structure with alternant arrangement of standard impingement holes and convergent impingement holes shows the worst heat transfer uniformity on the target surface. The three new structures can all significantly increase the thermal performance factor. Compared with the standard structure， the thermal performance factor of the cooling structure with only 6 convergent impingement holes arranged downstream is increased by 20.07%; the thermal performance factor of the cooling structure with all convergent impingement holes is increased by 21.72%; the thermal performance factor of the alternate arranged structure is increases by 12.11%. © 2025 Beijing University of Aeronautics and Astronautics (BUAA). All rights reserved.

引用

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