Tip leakage flow and heat transfer characteristics with effect of trailing edge cutback on squealer tip

CHENG Feng-na; CHANG Hai-ping; ZHANG Jing-yang; TIAN Xing-jiang; DU Zhi-neng

doi:10.13224/j.cnki.jasp.2016.02.017

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Tip leakage flow and heat transfer characteristics with effect of trailing edge cutback on squealer tip

更新时间：2026-07-07

- Tip leakage flow and heat transfer characteristics with effect of trailing edge cutback on squealer tip
- Vol. 31, Issue 2, Pages: 383-390(2016)
- 作者机构：
  
  1. 南京航空航天大学能源与动力学院江苏省航空动力重点实验室,南京,210016
  2. 南京航空航天大学航天学院,南京,210016
  3. 中国航空工业集团公司沈阳发动机设计研究所,沈阳,110015
- 作者简介：
- 基金信息：
- DOI：10.13224/j.cnki.jasp.2016.02.017
  CLC：
- Published：2016
- 稿件说明：
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成锋娜, 常海萍, 张镜洋, 田兴江, 杜治能. 突肩叶尖尾缘开槽对间隙流动换热特性的影响[J]. 航空动力学报, 2016, 31(2): 383-390.

doi: 10.13224/j.cnki.jasp.2016.02.017
成锋娜, 常海萍, 张镜洋, 田兴江, 杜治能. 突肩叶尖尾缘开槽对间隙流动换热特性的影响[J]. 航空动力学报, 2016, 31(2): 383-390. DOI： 10.13224/j.cnki.jasp.2016.02.017.

doi: 10.13224/j.cnki.jasp.2016.02.017 DOI：

摘要

通过数值计算对带有尾缘开槽结构的突肩叶尖间隙流场结构、泄漏流量、泄漏损失、表面传热系数进行了对比研究.研究结果显示:相比全突肩叶尖

吸力侧尾缘开槽突肩叶尖可以改变开槽附近泄漏流的流动路径

有效抑制其与主流的掺混.压力侧尾缘开槽和吸力侧尾缘开槽均会增加间隙泄漏流量.压力侧尾缘开槽突肩叶尖会增加间隙泄漏损失

开槽长度越大损失越大.研究范围内的吸力侧尾缘开槽均会减小间隙泄漏损失

但存在最佳开槽长度.压力侧和吸力侧尾缘开槽均会轻微地增加叶尖表面传热系数.

Abstract

Comparative study was carried out to investigate the leakage flow field

leakage mass flow rate

leakage flow loss and surface heat transfer coefficient of trailing edge cutback on squealer tips by numerical simulations. Research results show that the suction side trailing edge cutback on squealer tips can change the leakage flow path near the cutback area

and suppress the mixing of the leakage flow and the main stream effectively compared with the cavity tip. Both suction and pressure sides trailing edge cutback on squealer tips can increase the leakage mass flow rate. Pressure side trailing edge cutback on squealer tips can increase the tip clearance leakage flow loss with the increase of cutback length. Suction side trailing edge cutback on squealer tips within the studied range can decrease the tip leakage flow loss

but there is an optimum cutback length. Both pressure and suction sides trailing edge cutback on squealer tips can increase the tip surface heat transfer coefficient slightly.

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中国舰船研究院动力工程技术部

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