喷嘴周向位置和旋流腔拔模斜度对旋流冷却的影响

王杰枫 1; 杜长河 1; 吴凡 1; 范小军 1; 2; 李亮 1; 2

doi:10.7652/xjtuxb201811010

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喷嘴周向位置和旋流腔拔模斜度对旋流冷却的影响

更新时间：2025-07-09

- 喷嘴周向位置和旋流腔拔模斜度对旋流冷却的影响
- Effects of Jet Nozzle Circumferential Position and Vortex Chamber Draft Angle on the Flow and Heat Transfer Characteristics of Vortex Cooling
- 西安交通大学学报 2018年52卷第11期页码：65-72
- 作者机构：
  
  1. 西安交通大学叶轮机械研究所,西安,710049
  2. 陕西省叶轮机械及动力装备工程实验室,西安,710049
- 作者简介：
- 基金信息：
- DOI：10.7652/xjtuxb201811010
  中图分类号： TK474.7
- 网络首发：2018-11-10，
  
  纸质出版：2018
- 稿件说明：
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王杰枫 1, 杜长河 1, 吴凡 1, 等. 喷嘴周向位置和旋流腔拔模斜度对旋流冷却的影响[J]. 西安交通大学学报, 2018,52(11):65-72.

Effects of Jet Nozzle Circumferential Position and Vortex Chamber Draft Angle on the Flow and Heat Transfer Characteristics of Vortex Cooling[J]. 2018, 52(11): 65-72.
王杰枫 1, 杜长河 1, 吴凡 1, 等. 喷嘴周向位置和旋流腔拔模斜度对旋流冷却的影响[J]. 西安交通大学学报, 2018,52(11):65-72. DOI： 10.7652/xjtuxb201811010.

Effects of Jet Nozzle Circumferential Position and Vortex Chamber Draft Angle on the Flow and Heat Transfer Characteristics of Vortex Cooling[J]. 2018, 52(11): 65-72. DOI： 10.7652/xjtuxb201811010.

摘要

为了研究喷嘴周向位置及旋流腔拔模斜度对旋流冷却流动和传热特性的影响

探究综合性能更为优良的冷却结构

建立了适用于叶片前缘的旋流冷却模型。在验证了湍流模型的前提下

采用CFD方法对不同模型的流动换热特性进行了对比分析。结果表明:冷气从进口射入旋流腔

形成高速旋转运动; 冷气的三维流线沿轴向先径向收缩后径向扩张。喷嘴周向位置改变时

高速旋流区和低速旋流区的相对位置改变

并且高Nu区域的周向位置改变。对于叶根进气的情况

拔模斜度增大时

高速旋流区面积增加

低速旋流区面积减小

并且压力系数减小; 当拔模斜度为正值时

压力系数沿轴向降低; 拔模斜度为负值时

压力系数沿轴向升高

高Nu区域面积随着拔模斜度的增加而增加。叶根进气时

以拔模斜度为-1°时为参考值

拔模斜度增大至1°时

换热强度提高了9.1%

靶面传热量增加了8.4%

摩擦因数减小了4.1%

综合换热因数提升了8.8%。本文研究分析了不同几何参数下的旋流冷却流动和换热特性

以期为实际叶片前缘冷却结构的设计提供一定的理论参考。

Abstract

The effects of jet nozzle circumferential position and vortex chamber draft angle were numerically investigated based on the vortex cooling model suitable for blade leading edge. With the verified turbulence model

the CFD method was carried out to analyze and compare the flow and heat transfer behaviors of different cooling models. Results showed that high speed rotational flow is formed by the cooling air injected from the nozzles. The cooling air's three-dimensional streamlines first shrink and then expand radially along the axial direction. When the jet nozzle circumferential position changes

the relative position of high speed vortex region and low speed vortex region may also change

and the position of high Nusselt number region alters circumferentially. When inlet is on the shroud side

the area of high speed vortex region is enlarged and the area of low speed vortex region is contracted with the vortex chamber draft angle. Moreover

the pressure coefficient decreases as the vortex chamber draft angle increases. When the vortex chamber draft angle is positive

the pressure coefficient increases along the axial direction; when the vortex chamber draft angle is negative

the pressure coefficient decreases along the axial direction. If the vortex chamber draft angle is set -1° as the reference

when the vortex chamber draft angle is increased to 1°

the heat transfer intensity is increased by 9.1%

the wall heat flux is increased by 8.4%

the friction factor is decreased by 4.1% and the comprehensive thermal performance coefficient is increased by 8.8% compared with their corresponding reference values. The flow and heat transfer characteristics of the vortex cooling under different geometrical parameters investigated in this paper

and aims to provide references for designing practical blade tip cooling structures.

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references

LIAO Gaoliang, WANG Xinjun, LI Jun, et al. A numerical comparison of thermal performance of in-line pin-fins in a wedge duct with three kinds of coolant [J]. International Journal of Heat & Mass Transfer, 2014, 77(2): 1033-1042.

LIGRANI P M, HEDLUND C R, THAMBU R, et al. Flow phenomena in swirl chambers [C]∥ASME 1997 International Gas Turbine and Aeroengine Congress and Exhibition. New York, USA: ASME, 1997: V003T09A087.

QIAN C, FLANNERY K, SAITO K, et al. Innovative vortex cooling concept and its application to turbine airfoil trailing edge cooling design [C]∥The 33rd Joint Propulsion Conference and Exhibit. New York, USA: ASME, 1997: 3013.

GLEZER B, MOON H K, O'CONNELL T. A novel technique for the internal blade cooling [C]∥1996 ASME International Gas Turbine and Aeroengine Congress and Exhibition. New York, USA: ASME, 1996: V004T09A015.

HWANG J J, CHENG C S. Augmented heat transfer in a triangular duct by using multiple swirling jets [J]. Journal of Heat Transfer, 1999, 121(2): 683-690.

LING J P, IRELAND P T, HARVEY N W. Measurement of heat transfer coefficient distributions and flow field in a model of a turbine blade cooling passage with tangential injection [C]∥ASME Turbo Expo 2006: Power for Land, Sea, and Air. New York, USA: ASME, 2006: 325-334.

KUSTERER K, LIN G, BOHN D, et al. Heat transfer enhancement for gas turbine internal cooling by application of double swirl cooling chambers [C]∥ASME Turbo Expo 2013: Turbine Technical Conference and Exposition. New York, USA: ASME, 2013: V03AT12A027.

LIU Zhao, LI Jun, FENG Zhenping, et al. Numerical study on the effect of jet nozzle aspect ratio and jet angle on swirl cooling in a model of a turbine blade leading edge cooling passage [J]. International Journal of Heat Mass Transfer, 2015, 90: 986-1000.

杜长河, 范小军, 李亮, 等. 喷嘴长宽比和雷诺数对旋流冷却流动与传热特性的影响 [J]. 西安交通大学学报, 2015, 49(12): 124-129.

DU Changhe, FAN Xiaojun, LI Liang, et al. Effects of jet nozzle aspect ratio and Reynolds number on flow and heat transfer characteristics of vortex cooling [J]. Journal of Xi'an Jiaotong University, 2015, 49(12): 124-129.

DU Changhe, LI Liang, LI Sen, et al. Effects of aerodynamic parameters on steam vortex cooling behavior for gas turbine blade leading edge [J]. Proceedings of the Institution of Mechanical Engineers: Part A Journal of Power and Energy, 2016, 230(3): 354-365.

范小军, 杜长河, 李亮, 等. 4种冷却结构对叶片前缘流动换热影响的比较研究 [J]. 西安交通大学学报, 2017, 51(7): 37-43.

FAN Xiaojun, DU Changhe, LI Liang, et al. Comparative analysis for flow and heat transfer behavior of blade leading edge among four cooling structures [J]. Journal of Xi'an Jiaotong University, 2017, 51(7): 37-43.

范小军, 杜长河, 李亮, 等. 气膜孔几何位置对旋流冷却流动与传热特性的影响 [J]. 西安交通大学学报, 2016, 50(7): 32-38.

FAN Xiaojun, DU Changhe, LI Liang, et al. Effect of bleed hole location on vortex cooling flow and heat transfer performance [J]. Journal of Xi'an Jiaotong University, 2016, 50(7): 32-38.

杜长河, 范小军, 李亮, 等. 旋转半径和叶片安装角对动叶旋流冷却流动和传热特性的影响 [J]. 西安交通大学学报, 2017, 51(4): 37-42.

DU Changhe, FAN Xiaojun, LI Liang, et al. Influences of rotating radius and blade setting angle on rotor vortex cooling flow and heat transfer characteristics [J]. Journal of Xi'an Jiaotong University, 2017, 51(4): 37-42.

RAO Y, BIEGGER C, WEIGAND B. Heat transfer and pressure loss in swirl tubes with one and multiple tangential jets pertinent to gas turbine internal cooling [J]. International Journal of Heat and Mass Transfer, 2017, 106: 1356-1367.

LUAN Yuxuan, DU Changhe, FAN Xiaojun, et al. Investigations of flow structures and heat transfer in a swirl chamber with different inlet chambers and various aerodynamic parameters [J]. International Journal of Heat and Mass Transfer, 2018, 118: 551-561.

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