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Investigation of high-order cell-centered finite difference method for aeroacoustics
Jin Y; Liao F(廖飞); Cai JS; Morris PJ
Source Publication25th AIAA/CEAS Aeroacoustics Conference, 2019
Conference Name25th AIAA/CEAS Aeroacoustics Conference, 2019
Conference DateMay 20, 2019 - May 23, 2019
Conference PlaceDelft, Netherlands
AbstractThis paper discusses the potential of the application of a high-order cell-centered finite difference method (CCFDM) to problems in aeroacoustics. Based on an in-house code, a class of low-dissipation and low-dispersion compact schemes adopting optimization techniques is proposed for direct noise calculation of long-time long-distance sound propagation problems. These schemes are further validated with benchmark cases from a CAA workshop and the results indicate these schemes outperform the widely-used 5th-order upwind scheme. The second part of this paper investigates the capability of combining CCFDM with the FW-H acoustic analogy for the far-field noise prediction. Two example cases, including a tonal noise case (laminar flow past a 2D NACA0012 airfoil) and a broadband case (turbulent flow past a 3D rod-airfoil configuration), are both analyzed in detail. Good agreement with experimental data has been achieved, which indicates that the CCFDM coupled with the FW-H acoustic analogy has great potential in aeroacoustics. © 2019, American Institute of Aeronautics and Astronautics Inc, AIAA. All rights reserved.
Indexed ByEI
Document Type会议论文
Affiliation1.National Key Laboratory of Aerodynamic Design and Research, School of Aeronautics, Northwestern Polytechnical University, Xi’an, 710072, China
2.State Key Laboratory of Nonlinear Mechanics, Institute of Mechanics, China Academy of Science, Beijing, 100190, China
3.Department of Aerospace Engineering, the Pennsylvania State University, University ParkPA 16802, United States
Recommended Citation
GB/T 7714
Jin Y,Liao F,Cai JS,et al. Investigation of high-order cell-centered finite difference method for aeroacoustics[C]25th AIAA/CEAS Aeroacoustics Conference, 2019,2019.
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