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首页> 外文期刊>The Aeronautical Journal >2D numerical study of circular synthetic jets in quiescent flows
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2D numerical study of circular synthetic jets in quiescent flows

机译：静态流动中圆形合成射流的二维数值研究

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摘要

2D numerical simulations of flows generated by a synthetic jet actuator with a circular orifice were conducted at two different diaphragm displacement settings, one representing a typical laminar case and the other a fully turbulent case. The flow in the cavity was included in the computation in order to provide more accurate predictions. A velocity boundary condition was applied at the neutral position of the diaphragm to account for its temporal deformation. Comparisons were made between the computational results and existing PIV and hot-wire data in terms of the time sequence of the velocity vector field, velocity variations in space and with time. It is found that computational results for the laminar case agree well with the experimental data. Four turbulent models were tested for the fully turbulent case. It was found that the predictions using the RNG κ-ε and Standard κ-ε models were reasonably close to the experimental data. This initial study has produced some encouraging evidence for the capacity of FLUENT in simulating the key features of synthetic jets.
机译：由带有圆形孔口的合成射流致动器产生的流动的二维数值模拟是在两种不同的隔膜位移设置下进行的，一种代表典型的层流情况，另一种代表完全湍流的情况。为了提供更准确的预测，空腔中的流动已包括在计算中。在膜片的中性位置施加了速度边界条件，以说明其暂时变形。根据速度矢量场的时间顺序，空间中的速度变化和时间变化，对计算结果与现有的PIV和热线数据进行了比较。发现层流情况的计算结果与实验数据吻合良好。测试了四个湍流模型的全湍流情况。发现使用RNGκ-ε模型和标准κ-ε模型进行的预测与实验数据相当接近。这项初步研究为FLUENT模拟合成射流的关键特征提供了令人鼓舞的证据。

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  • 来源
    《The Aeronautical Journal》 |2005年第1092期|p.89-97|共9页
  • 作者

    H. Tang; S. Zhong;

  • 作者单位

    School of Mechanical, Aerospace and Civil Engineering, The University of Manchester, UK;

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

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