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首页> 外文期刊>Journal of visualization >Secondary flow visualization on stagnation row of a combined impingement and film cooled high-pressure gas turbine nozzle guide vane using PIV technique
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Secondary flow visualization on stagnation row of a combined impingement and film cooled high-pressure gas turbine nozzle guide vane using PIV technique

机译：使用PIV技术在冲击和薄膜冷却的高压燃气轮机喷嘴导流叶片的滞止排上进行二次流动可视化

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摘要

In this study, the local jet velocity distribution for a combined impingement and film cooled high-pressure nozzle guide vane system was analyzed, using flow visualization and PIV-assisted measurement. The measurements including flow visualization were performed on the stagnation row of an NGV to understand its complex flow pattern. PIV technique was used to measure the effused coolant jet exit velocity field in two-dimensional vertical planes. The computations were performed by ANSYS FLUENT 14.5 SOLVER using shear stress transport (SST) k-ω turbulence model. Three laboratory test cases that correspond to inlet coolant mass flow rates of 0.0032, 0.0045 and 0.0054 kg/s, at the region of an FIT, were studied. The numerical results for the spanwise coolant velocity at stagnation row of the film holes agreed well with the PIV experimental data on the same vane configuration.
机译：在这项研究中，使用流量可视化和PIV辅助测量，分析了冲击和薄膜冷却的高压喷嘴导流叶片系统的局部喷射速度分布。在NGV的停滞行上进行了包括流量可视化在内的测量，以了解其复杂的流量模式。 PIV技术用于在二维垂直平面中测量喷射的冷却液射流出口速度场。计算是由ANSYS FLUENT 14.5 SOLVER使用剪切应力传输（SST）k-ω湍流模型进行的。研究了三个FIT区域对应于入口冷却剂质量流量为0.0032、0.0045和0.0054 kg / s的实验室测试案例。在相同叶片配置下，膜孔停滞行处翼展方向冷却剂速度的数值结果与PIV实验数据非常吻合。

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  • 来源
    《Journal of visualization》 |2017年第4期|817-832|共16页
  • 作者

    Kukutla Pol Reddy; Prasad Bhamidi V.S.S.S.;

  • 作者单位

    Turbomachines Laboratory, Department of Mechanical Engineering, Indian Institute of Technology Madras, Chennai, Tamil Nadu, India;

    Turbomachines Laboratory, Department of Mechanical Engineering, Indian Institute of Technology Madras, Chennai, Tamil Nadu, India,Dept. of Mechanical Engineering, Indian Institute of Technology Madras, Chennai, Tamil Nadu, India;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    CFD; Combined impingement and film cooling; FIT; NGV; PIV;

    机译：CFD;冲击和薄膜冷却相结合;FIT;NGV;PIV;

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