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Conjugate Heat Transfer Predictions on Combined Impingement and Film Cooling of a Blade Leading Edge Model

机译：叶片前缘模型组合撞击和薄膜冷却的共轭传热预测

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摘要

In this paper, numerical simulation is performed to predict combined impingement and film cooling on a model of the turbine blade leading edge by the heat flow coupling method. The first-stage rotor blade leading edge of the GE-E~3 engine high-pressure turbine is adopted for the simulation. The relative performances of turbulence models are compared with experimental data and the results show that standard k-ω model is the best, based on simulation accuracy. The standard k-ω model is adopted for the simulation. A grid independence study is also carried out. Five different mass flow ratios and seven different film cooling hole configurations are studied in detail. The results indicate that (1) the overall film cooling effectiveness on the leading edge surface and the Nusselt number on the target surface increase with increases of coolant mass flow ratio; (2) the blade leading edge temperature decreases with an increase in mass flow ratio; and (3) the area-averaged overall film cooling effectiveness increases with a decrease in spanwise film cooling injection angle, when the injection angle is lower than 25°, while it does not change much otherwise.
机译：在本文中，执行数值模拟，以通过热流耦合方法预测涡轮叶片前缘模型的组合冲击和薄膜冷却。用于模拟采用GE-E〜3发动机高压涡轮机的第一级转子叶片前缘。湍流模型的相对性能与实验数据进行比较，结果表明，基于模拟精度，标准K-Ω模型是最佳的。模拟采用标准K-Ω模型。还进行了网格独立性研究。详细研究了五种不同的质量流量比和七种不同的薄膜冷却孔配置。结果表明（1）前沿表面上的整体膜冷却效果和目标表面上的露珠数随着冷却剂质量流量比的增加而增加; （2）刀片前缘温度随质量流量比率的增加而降低; （3）当注射角度低于25°时，面积平均总膜冷却效果随着翼翼膜冷却注射角的减小而增加，而其不会改变太多。

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  • 来源
    《Heat Transfer Engineering》 |2021年第18期|1363-1380|共18页
  • 作者

    Zhao Liu; Feng Li; Zhixin Zhang; Zhenping Feng; Terrence W. Simon;

  • 作者单位

    Shaanxi Engineering Laboratory of Turbomachinery and Power Equipment Institute of Turbomachinery School of Energy & Power Engineering Xi'an Jiaotong University Xi'an China;

    Shaanxi Engineering Laboratory of Turbomachinery and Power Equipment Institute of Turbomachinery School of Energy & Power Engineering Xi'an Jiaotong University Xi'an China;

    Shaanxi Engineering Laboratory of Turbomachinery and Power Equipment Institute of Turbomachinery School of Energy & Power Engineering Xi'an Jiaotong University Xi'an China;

    Shaanxi Engineering Laboratory of Turbomachinery and Power Equipment Institute of Turbomachinery School of Energy & Power Engineering Xi'an Jiaotong University Xi'an China;

    Department of Mechanical Engineering University of Minnesota Minneapolis Minnesota USA;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
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  • 正文语种 eng
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