基于流场/声场混合模型的叶轮机械单音噪声研究

doi:10.7527/S1000-6893.2014.0014

Abstract

Abstract:

Turbomachinery tonal noise hybrid prediction model (URANS/DBAA) is developed successfully based on the three-dimensional unsteady Reynolds-averaged Navier-Stokes (URANS) equations and the ducted blade-rows acoustic analogy (DBAA) theory. In the URANS/DBAA hybrid model, the detailed design parameters of the turbomachinery blades can be related to the noise level, and the computational load is not required so much because the Lighthill's acoustic analogy theory is used. The tonal noise of a single stage axial fan is predicted based on the URANS/DBAA hybrid model and the characteristics of the noise sources distribution on the blade surface are analyzed in detail. The results indicate that the URANS/DBAA hybrid model can simulate the turbomachinery tonal noise correctly and it can be used to recognize and analyze the primary rules of the turbomachinery tonal noise.

Key words: tonal noise, acoustic analogy, hybrid model, turbomachinery, axial fan

CLC Number:

V231

WANG Liangfeng, QIAO Weiyang, JI Liang, TONG Fan. Turbomachinery Tonal Noise Study Based on Flow-field/acoustic-field Hybrid Model[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2014, 35(9): 2481-2490.

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Turbomachinery Tonal Noise Study Based on Flow-field/acoustic-field Hybrid Model

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