ACTA AERONAUTICAET ASTRONAUTICA SINICA >
Broadband noise fast evaluation method and its application in three dimensional design stage of fan
Received date: 2023-02-24
Revised date: 2023-03-27
Accepted date: 2023-04-24
Online published: 2023-05-12
Supported by
National Science and Technology Major Project （2017-Ⅱ-0008-0022）;National Natural Science Foundation of China(51776174);Aviation Engine and Gas Turbine Basic Science Center Project （P2022-A-Ⅱ-003-001, P2022-B-Ⅱ-011-001）
In this study， a fast broadband noise prediction method was developed for the three-dimensional design stage of fans to predict the fan rotor-stator interaction broadband noise. The main purpose is to quickly obtain the broadband noise spectrum and characteristics after obtaining the aerodynamic characteristics in the fan three-dimensional design stage. The three-dimensional stage broadband noise model of the fan in this paper is a semi-analytical model based on the steady Reynolds Average Navier-Stokes equation （RANS）， which extracts the upstream blade wake turbulence information of the sound source through the steady Computational Fluid Dynamics （CFD） calculation results， and then couples the turbulence information with the analytical model to quickly predict the fan broadband noise level. In this paper， the established fast broadband noise prediction model is firstly introduced， followed by verification of the analytical method part of the broadband noise model by the experimental data of an annular cascade acoustic experimental platform， and finally， the prediction and evaluation of aerodynamic performance and acoustic performance of a single-stage axial fan and a two-stage axial fan are conducted using the established fast broadband noise prediction model. The results show that the distribution of upstream turbulence of the sound source is directly related to the secondary flow of the upstream blades. In addition， the level of broadband noise increases significantly when the actual operating state of the fan deviates from the design operating state.
Hang TONG , Liangji ZHANG , Ruibiao GAO , Weijie CHEN , Weiyang QIAO . Broadband noise fast evaluation method and its application in three dimensional design stage of fan[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2023 , 44(24) : 128606 -128606 . DOI: 10.7527/S1000-6893.2023.28606
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