Effects of unsteady wake on heat transfer performance of compound angle blade:numerical simulation

ZHANG Ling; XIU Dongbo; WU Chuang; GUO Ruihong

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Effects of unsteady wake on heat transfer performance of compound angle blade:numerical simulation

Thermal Power Generation Vol. 45, Issue 3, Pages: 13-19(2016)

更新时间：2025-09-28

- Effects of unsteady wake on heat transfer performance of compound angle blade:numerical simulation
- 作者机构：
  
  1. 东北电力大学能源与动力工程学院
  2. 哈尔滨汽轮机厂有限责任公司
  3. 华能玉环电厂
- 作者简介：
- 基金信息：
- DOI：
  CLC： TK124;TK471
- Published：2016
- 稿件说明：
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ZHANG Ling, XIU Dongbo, WU Chuang, et al. Effects of unsteady wake on heat transfer performance of compound angle blade:numerical simulation[J]. Thermal Power Generation, 2016, 45(3): 13-19.
DOI：

ZHANG Ling, XIU Dongbo, WU Chuang, et al. Effects of unsteady wake on heat transfer performance of compound angle blade:numerical simulation[J]. Thermal Power Generation, 2016, 45(3): 13-19. DOI：

摘要

应用标准k-ε紊流模型及SIMPLE算法

在非定常环境下

通过直径分别为2

6mm的圆柱(尾迹宽度)来模拟燃气轮机静叶产生的尾迹

分析1个周期内展向倾角为45°时

射流孔中心线与叶片表面的夹角分别为30°

45°

60°的3种复合角度动叶表面的传热特性。结果表明:1个周期内动叶全表面努塞尔数明显不同;随着动叶复合角度的增大

尾迹使压力面传热效果增强

吸力面传热效果减弱;不同宽度尾迹对压力面传热效果的影响明显高于吸力面

而尾迹宽度为4mm时

下游动叶全表面的传热效果最佳。

Abstract

The standard k-εturbulence model and the SIMPLE algorithm were applied to simulate the wake produced by static blade of gas turbine

through a cylinder with diameter of 2mm

4mm and 6mm.The heat transfer characteristics on surface of the rotor blade with the angle between the injection hole centerline and the blade surface of 30°

45°and 60°were analyzed

when the dip angle within a cycle is 45°.The results show that

the Nusselt number on the rotor blade surface is different during a cycle.With an increase in the composite angle of the rotor blade

the unsteady wake weakens the heat transfer on the suction surface.The unsteady wakes with different widths have obviously greater influence on heat transfer on the pressure face than that on the suction face.With the wake width of 4mm

the heat transfer coefficient on entire surface of the rotor blade at the downstream reached the best.

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Related Author

ZHANG Ling

XIU Dongbo

WU Chuang

GUO Ruihong

WANG Chong

郑玮琳

代佳奇

宋雪松

Related Institution

School of Energy and Power Engineering, Northeast Dianli University

Harbin Turbine Company Limited

Xi’an Thermal Power Research Institute Co., Ltd.

School of Energy and Environment, Southeast University

School of Energy Science and Engineering, Nanjing Tech University

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