Author:
Zhang Yufei,Xiao Yang,Liu Ruihuan,Chen Haixin
Abstract
AbstractA hybrid noise computation method is presented in this paper. Large-eddy simulation with wall-model equation is proposed to compute the flow field. With a stress-balanced wall-model equation, the near-wall computation cost of large eddy simulation was effectively reduced. The instantaneous flow variables obtained by the large-eddy simulation were used to compute the noise source terms of the Ffowcs Williams–Hawkings equation. The present method was investigated with two test cases: a single cylinder atRe = 10,000 and a rod-airfoil atRe = 480,000. The flow quantities and aeroacoustic characteristics were compared with the reference data. The mean velocity profiles and spectra of the flow fluctuations were consistent with data from the literature. When compared with the reference data, the noise computation error was less than 3 dB. The computation results demonstrate the present wall-modeled large eddy simulation is efficient for the noise computation of complex vortex shedding flows.
Funder
National Natural Science Foundation of China
National Science and Technology Major Project
Publisher
Springer Science and Business Media LLC
Subject
Mechanical Engineering,Aerospace Engineering,Modeling and Simulation,Renewable Energy, Sustainability and the Environment,Civil and Structural Engineering
Cited by
6 articles.
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