表面凸起对机翼热气防冰腔内换热强化的影响

doi:10.7527/S1000-6893.2016.0300

飞机结冰致灾与防护专栏

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表面凸起对机翼热气防冰腔内换热强化的影响

郭之强¹, 郑梅¹, 董威¹, 朱剑鋆²

1. 上海交通大学机械与动力工程学院, 上海 200240;
2. 中国航发商用航空发动机有限责任公司, 上海 201108

收稿日期:2016-08-26 修回日期:2016-11-16 出版日期:2017-02-15 发布日期:2016-11-30
通讯作者: 董威,E-mail:wdong@sjtu.edu.cn E-mail:wdong@sjtu.edu.cn
基金资助:
国家“973”计划（2015CB755800）；国家自然科学基金（11572195，11272212）

Influence of surface convex on heat transfer enhancement of wing hot air anti-icing system

GUO Zhiqiang¹, ZHENG Mei¹, DONG Wei¹, ZHU Jianjun²

1. School of Mechanical Engineering, Shanghai Jiaotong University, Shanghai 200240, China;
2. AECC Commercial Aircraft Engine Co., Ltd, Shanghai 201108, China

Received:2016-08-26 Revised:2016-11-16 Online:2017-02-15 Published:2016-11-30
Supported by:
National Basic Research Program of China (2015CB755800); National Natural Science Foundation of China (11572195, 11272212)

摘要/Abstract

摘要：

采用数值模拟对比研究了光滑表面和具有表面凸起结构热气防冰腔内湍流流动的换热特性。机翼防冰腔内笛形管具有三排射流孔，射流孔角度有0°±45°组合以及0°±30°组合。为了强化射流冲击光滑表面的流动换热，在防冰腔内表面正对射流孔的射流冲击区，设计了表面凸起结构，用来强化射流对壁面的冲击换热效果并起到引流作用。通过改变射流孔射流角度研究了射流角度对传热特性的影响。计算结果表明：与光滑防冰腔内表面射流冲击换热相比，表面凸起结构可以将均匀发散的壁面射流集中为高速壁面射流，提高壁面射流区的对流换热系数，从而增强射流冲击换热效果，机翼前缘的强化换热效果尤为明显。

关键词: 热气防冰, 冲击射流, 表面凸起, 强化换热, 数值模拟

Abstract:

A comparative study is conducted to investigate the heat transfer characteristic of turbulent flow in the hot air anti-icing system with and without surface convex by using numerical simulation method. Three-row impingement jet holes are set on the piccolo tube, with different impinging angles:0°±45° and 0°±30°. In order to strengthen the impinging heat transfer, the surface protrusions located in front of the impinging holes are designed as a guiding passage of the hot air. The influence of jet angle on heat transfer characteristics is studied by changing the angle of the jet. Calculation results show that the surface structures can enable the wall jet flow dispersing uniformly to be concentrated into wall jet flow with higher speed. Compared to the jet impingement heat transfer of anti-icing cavity with smooth surface, the convective heat transfer of the wall jet zone is enhanced. The heat transfer of jet impingement, especially on the wing leading edge, is thus increased.

Key words: hot air anti-icing, impinging jet, structure convex, enhanced heat transfer, numerical simulation

中图分类号:

V211.3

郭之强, 郑梅, 董威, 朱剑鋆. 表面凸起对机翼热气防冰腔内换热强化的影响[J]. 航空学报, 2017, 38(2): 520709-520718.

GUO Zhiqiang, ZHENG Mei, DONG Wei, ZHU Jianjun. Influence of surface convex on heat transfer enhancement of wing hot air anti-icing system[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2017, 38(2): 520709-520718.

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E-mail：hkxb@buaa.edu.cn

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表面凸起对机翼热气防冰腔内换热强化的影响

Influence of surface convex on heat transfer enhancement of wing hot air anti-icing system

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