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The noise of high-lift device has been one of the main noise sources during the takeoff and landing stages. Numerical simulation has been becoming a major means to study the noise properties. The High Lift Common Research (HL-CRM) model released by NASA has been taken as the research object in this article. Based on the RANS/LES hybrid model, the flow field of a 1/30 scaled HL-CRM model has been finely simulated, with the FW-H acoustic analogy method been employed for solving the boundary integral equation to obtain sound pressures at far-field monitors. Research has shown that the numerical results are in good agreement with the experimental data, demonstrating the effectiveness of the current numerical models. The leading pressure side of the main wing and the suction side of the flaps are the main sources of noise.

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Numerical Simulation of Aeroacoustic Noise for High-Lift Devices Based on Hybrid CAA Model

  • 会议论文

  • 发表日期：

    2025年

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  • Haiyang Zhao,
  • Anyu Bao,
  • Guocheng Zhou

摘要

The noise of high-lift device has been one of the main noise sources during the takeoff and landing stages. Numerical simulation has been becoming a major means to study the noise properties. The High Lift Common Research (HL-CRM) model released by NASA has been taken as the research object in this article. Based on the RANS/LES hybrid model, the flow field of a 1/30 scaled HL-CRM model has been finely simulated, with the FW-H acoustic analogy method been employed for solving the boundary integral equation to obtain sound pressures at far-field monitors. Research has shown that the numerical results are in good agreement with the experimental data, demonstrating the effectiveness of the current numerical models. The leading pressure side of the main wing and the suction side of the flaps are the main sources of noise.