叶顶形状对动叶顶部流动和传热的影响研究

杨佃亮; 丰镇平

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叶顶形状对动叶顶部流动和传热的影响研究

专题研究 | 更新时间：2025-12-08

- 叶顶形状对动叶顶部流动和传热的影响研究
- Effect of Squealer Geometry Arrangements on Tip Leakage Flow and Heat Transfer for Turbine Blade
- 西安交通大学学报 2008年42卷第5期页码：537-541
- 作者机构：
  
  西安交通大学叶轮机械研究所,西安,710049
- 作者简介：
- 基金信息：
  
  : 2007-07-09. 作者简介: 杨佃亮(1979-),男,博士生;丰镇平(联系人),男,教授,博士生导师. 基金项目: 国家重点基础研究发展计划资助项目(2007CB210107)
- DOI：
  中图分类号： TK474.7
- 网络首发：2008-05-10，
  
  纸质出版：2008
- 稿件说明：
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杨佃亮, 丰镇平. 叶顶形状对动叶顶部流动和传热的影响研究[J]. 西安交通大学学报, 2008,42(5):537-541.

杨佃亮, 丰镇平. Effect of Squealer Geometry Arrangements on Tip Leakage Flow and Heat Transfer for Turbine Blade[J]. 2008, 42(5): 537-541.
杨佃亮, 丰镇平. 叶顶形状对动叶顶部流动和传热的影响研究[J]. 西安交通大学学报, 2008,42(5):537-541. DOI：

杨佃亮, 丰镇平. Effect of Squealer Geometry Arrangements on Tip Leakage Flow and Heat Transfer for Turbine Blade[J]. 2008, 42(5): 537-541. DOI：

摘要

应用数值方法和标准k-ω湍流模型

研究了燃气轮机轴流透平不同叶顶密封方式对透平动叶顶部间隙内流动与传热的影响.计算叶型采用GE-E

发动机高压透平第一级动叶片

考虑了4种不同的叶顶密封方式.详细分析了不同叶顶密封时叶顶的流动结构和传热分布.研究了旋转对动叶顶部流动和传热的影响

并与静止的平面叶栅中获得的结果进行了对比.结果表明:不同叶顶密封方式对叶顶间隙泄漏流场影响很大; 双侧肩壁密封具有最好的密封性能

而压力面肩壁密封性能最差; 采用吸力面肩壁密封获得了最低的叶顶传热系数

压力面侧肩壁密封的叶顶传热系数则最高; 相对于静止叶栅

旋转改变了叶顶泄漏流动结构

增加了叶顶的传热系数.

Abstract

A numerical prediction was performed to study the effect of squealer geometry on tip leakage flow and heat transfer for the first stage rotor blade in a high pressure turbine of GE-E

engines. Calculations were conducted for four different squealer geometry arrangements by solving Reynolds-averaged N-S equations in conjunction with the standard k-ω two-equation turbulence model. Flow structure and heat transfer characteristics in the tip gap were presented. The effect of blade rotation was analyzed and compared with that obtained from linear cascade. The results show that the minimum leakage flow occurs when the full squealer tip is adopted. In addition the tip heat transfer coefficient is the lowest when suction side squealer geometry is used.

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references

BUNKER R S,BALLEY J C,AMERI A A. Heat transfer and flow on the first-stage blade tip of a power generation gas turbine part 1-experimental results[J]. ASME Journal of Turbomachinery, 2000, 122(2):263-271.

AZAD G S, HAN Jechin. Heat transfer and flow on the squealer tip of a gas turbine blade[J].Journal of Turbomachinery, 2000, 122(4):725-732.

KWAK J S, HAN Jechin. Heat transfer coefficients on the squealer tip and near squealer tip regions of a gas turbine blade[J]. ASME Journal of Heat Transfer, 2003, 125(3):669-677.

AZAD G S, HAN Jechin, BUNKER R S, et al. Effect of squealer geometry arrangement on a gas turbine blade tip heat transfer[J]. ASME Journal of Heat Transfer, 2002, 124(3):452-459.

KWAK J S, AHN J, HAN Jechin. Effects of rim location, rim height, and tip clearance on the tip and near tip region heat transfer of a gas turbine blade[J]. International Journal of Heat and Mass Transfer, 2004, 47(26):5651-5663.

NASIR H, EKKAD S V, KONTROVITZ D M, et al. Effect of tip gap and squealer geometry on detailed heat transfer measurements over a high pressure turbine rotor blade tip[J]. ASME Journal of Turbomachinery, 2004, 126(2):221-228.

SAXENA V, EKKAD S V. Effect of squealer geometry on tip flow and heat transfer for a turbine blade in a low speed cascade[J]. ASME Journal of Turbomachinery, 2004, 126(4):546-553.

NEWTON P J, LOCK G D, KRISHNABABU S K, et al. Heat transfer and aerodynamics of turbine blade tips in a linear cascade[J]. ASME Journal of Turbomachinery, 2006, 128(2):300-309.

YANG Dianliang, FENG Zhenping. Tip leakage flow and heat transfer predictions for turbine blades[C]∥ Proceedings of ASME Turbo Expo 2007. New York, USA:ASME, 2007: 589-596.

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