Comparative Analysis for Flow and Heat Transfer Behavior of Blade Leading Edge among Four Cooling Structures

doi:10.7652/xjtuxb201707006

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Comparative Analysis for Flow and Heat Transfer Behavior of Blade Leading Edge among Four Cooling Structures

更新时间：2025-07-09

- Comparative Analysis for Flow and Heat Transfer Behavior of Blade Leading Edge among Four Cooling Structures
- Vol. 51, Issue 7, Pages: 37-43(2017)
- 作者机构：
  
  西安交通大学能源与动力工程学院,西安,710049
- 作者简介：
- 基金信息：
- DOI：10.7652/xjtuxb201707006
  CLC： TK474.7
- Online First：10 July 2017，
  
  Published：2017
- 稿件说明：
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Comparative Analysis for Flow and Heat Transfer Behavior of Blade Leading Edge among Four Cooling Structures[J]. 2017, 51(7): 37-43.
DOI：

Comparative Analysis for Flow and Heat Transfer Behavior of Blade Leading Edge among Four Cooling Structures[J]. 2017, 51(7): 37-43. DOI： 10.7652/xjtuxb201707006.

摘要

为了研究不同冷却结构对叶片前缘冷却性能的影响

建立了冲击冷却、简单旋流冷却、中间双旋流冷却和切向双旋流冷却的4种结构

利用流体动力学软件ANSYS CFX对比分析了各种冷却结构的流动和换热特性。研究结果表明:冲击冷却的冷气流速变化剧烈

靶面压力较高

流阻系数最低

局部换热强度大

靶面平均换热强度不大; 简单旋流冷却的流速变化较为平缓

流阻系数较大

换热强度较大

靶面换热强度分布均匀; 中间双旋流冷却的平均换热系数最大

换热强度分布比较均匀

流阻系数较小

可以作为一种新型的发展前景良好的前缘冷却结构; 切向双旋流冷却的流动和换热特性很差

不具备进一步研究的价值。

Abstract

Four cooling structures

i.e.

impingement cooling

traditional vortex cooling

middle-double vortex cooling and tangential-double vortex cooling

were constructed to investigate the influences on blade cooling behavior. The software ANSYS CFX was chosen to comparatively analyze the flow and heat transfer performance in the above structures. The results indicate that in the impingement cooling structure

air velocity changes obviously and pressure on target gets higher with the lowest friction coefficient

high local heat transfer intensity and low average heat transfer coefficient; in the traditional vortex cooling structure

air velocity changes slightly with large friction coefficient

large average heat transfer coefficient and better heat transfer distribution; in the middle-double vortex cooling structure

the highest average heat transfer coefficient and low friction coefficient show the potential application foreground as a new cooling structure for blade leading edge. It is unnecessary to further study the tangential-double vortex cooling structure due to its worse heat transfer performance.

关键词

Keywords

references

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Related Institution

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西安交通大学叶轮机械研究所，710049，西安Institute of Turbomachinery, Xi'an Jiaotong University, Xi'an 710049, China

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