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Numerical investigation on noise reduction of rotor blade-vortex interaction using blade surface jet blowing

机译：叶片表面喷射吹塑转子叶片 - 涡旋相互作用降噪的数值研究

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摘要

The effects of blade surface jet blowing on the reduction of rotor blade-vortex interaction (BVI) noise are investigated using the compressible Reynolds-averaged Navier-Stokes equations and the Ffowcs WilliamsHawkings equations. A detailed analysis of the accuracy of the Weighted Essentially Non-Oscillatory (WENO) scheme and Monotone Upstream-Centered Scheme for Conservation Laws for simulating the flow field and predicting the BVI noise is performed using a two-bladed scaled AH-1 helicopter main rotor undergoing BVI as the baseline case. Additionally, a grid convergence study is conducted. The BVI noise is accurately predicted using the fifth-order WENO scheme and high-resolution grid system (the prediction errors of the peak sound pressure are less than 4%). Surface boundary conditions are introduced to model the effect of jet blowing on the blade surface on the flow control of the baseline case. Blade surface blowing is analyzed near the trailing edge and the leading edge near the rotor tip. The results show that blowing near the blade trailing edge is effective for BVI mitigation by altering the tip vortex strength and increasing the blade-vortex miss distance. The sound pressure level is reduced by 2.6 dB, and the peak amplitude is attenuated by more than 30%, with a 9.8% loss in rotor thrust. Therefore, blowing near the trailing edge may be considered a promising approach for active BVI noise control. (C) 2021 Elsevier Masson SAS. All rights reserved.
机译：使用可压缩的雷诺平均Navier-Stokes方程和FFOWS WilliamShawkings方程，研究了叶片表面射流对转子叶片 - 涡旋相互作用（BVI）噪声的减少的影响。详细分析了基本上非振荡（WENO）方案和单调上游居中的单调上游方案用于模拟流场和预测BVI噪声的单调上游方案进行了详细分析，并使用双刃缩放AH-1直升机主转子执行被BVI作为基线案件。另外，进行网格收敛研究。使用第五阶WENO方案和高分辨率网格系统（峰值声压的预测误差小于4％）精确预测BVI噪声。引入了表面边界条件以模拟射流吹送对基线壳体的流动控制叶片表面的影响。在后缘附近分析叶片表面吹气，并在转子尖端附近的前缘附近。结果表明，通过改变尖端涡流强度并增加刀片 - 涡流错失距离，叶片后缘附近的吹动是对BVI缓解的有效性。声压水平降低2.6dB，峰值幅度衰减超过30％，转子推力损耗为9.8％。因此，在后缘附近的吹入可以被认为是用于有源BVI噪声控制的有希望的方法。 （c）2021 Elsevier Masson SAS。版权所有。

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  • 来源
    《Aerospace science and technology》 |2021年第9期|106868.1-106868.16|共16页
  • 作者

    Sun Yan; Xu Guohua; Shi Yongjie;

  • 作者单位

    Nanjing Univ Aeronaut & Astronaut Natl Key Lab Rotorcraft Aeromech Nanjing 210016 Peoples R China;

    Nanjing Univ Aeronaut & Astronaut Natl Key Lab Rotorcraft Aeromech Nanjing 210016 Peoples R China;

    Nanjing Univ Aeronaut & Astronaut Natl Key Lab Rotorcraft Aeromech Nanjing 210016 Peoples R China;

  • 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

    BVI noise; TAMI; Vortex; Aeroacoustics; Rotor; CFD;

    机译：BVI噪音;TAMI;涡旋;空气声学;转子;CFD;

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