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首页> 外文期刊>Journal of Aircraft >Detached-Eddy Simulations of Synthetic Jets for High-Angles-of-Attack Airfoils
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Detached-Eddy Simulations of Synthetic Jets for High-Angles-of-Attack Airfoils

机译:高攻击角机翼合成射流的分离涡流模拟

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摘要

This study investigates the performance of detached-eddy simulation to simulate the flow control by a synthetic jet around an airfoil. The effect of the jet exit angle is focused on. The detached-eddy simulation approach is first validated with a nonblowing, high-angle-of-attack case. Flows around a NACA 0012 airfoil including the synthetic jet cavity and its orifice at 10% chord location are then simulated at 12 deg angle of attack and Reynolds number of 10~5. The jet exit angles of 45, 60, 75, and 90 deg have been studied. Massively separated flows were eliminated in all cases. The angles of 45 and 60 deg successfully recovered stably attached flow over the airfoil with small amplitude of the aerodynamic forces, while the flow unsteadiness due to remaining separation is observed at higher jet exit angles, resulting in large amplitude of the drag force.
机译:这项研究调查了分离涡模拟的性能,以模拟翼型周围的合成射流的流动控制。射流出口角的影响着重于此。分离涡流仿真方法首先在不吹气,高攻角的情况下得到验证。然后在攻角为12度,雷诺数为10〜5的情况下,模拟NACA 0012机翼周围的气流,包括合成射流腔及其在10%弦位置处的孔。已经研究了45、60、75和90度的射流出口角。在所有情况下,都消除了大规模分离的流量。 45度和60度角成功地恢复了稳定附着的翼型气流,而气动力的幅度较小,而在较高的射流出口角观察到由于剩余分离而引起的气流不稳定,从而导致了阻力较大的幅度。

著录项

  • 来源
    《Journal of Aircraft》 |2015年第1期|168-175|共8页
  • 作者

    Yuichi Ishibashi; Koji Miyaji;

  • 作者单位

    Yokohama National University, Kanagawa 240-8501, Japan;

    Yokohama National University, Kanagawa 240-8501, Japan;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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