2024-03-29T15:12:18Z
https://nagoya.repo.nii.ac.jp/oai
oai:nagoya.repo.nii.ac.jp:00007404
2023-01-16T03:52:44Z
320:321:322
非圧縮性流れ場と音場に分離された方程式による円柱まわりの空力音の計算
Aeroacoustic Simulation around a Circular Cylinder by the Equations Split for Incompressible Flow Field and Acoustic Field
加藤, 由博
KATO, Yoshihiro
MEN'SHOV, Igor
中村, 佳朗
NAKAMURA, Yoshiaki
open access
日本機械学会
本文データは学協会の許諾に基づきCiNiiから複製したものである。
Aerodynamic Acoustics
Computational Fluid Dynamics
Numerical Analysis
Noise
Wave
Aeroacoustics
A method for computational aeroacoustics using the equations split into the incompressible flow part and the acoustic part is investigated in this paper. The equations derived based on Mach number expansion, and the method to solve them with high accuracy and stability are shown. The finite volume method using WENO scheme is applied to the acoustic field around a circular cylinder. Comparing the present method with the approximate solution based on the acoustic analogy, it is found that the acoustic field has been decayed according to the square root of the distance from the object further from about 10 times the diameter. In addition, 15 grid points per a wave length can give a sufficiently accurate solution by the present method.
日本機械学会
2005-11
jpn
journal article
VoR
http://hdl.handle.net/2237/9088
https://nagoya.repo.nii.ac.jp/records/7404
http://ci.nii.ac.jp/naid/110005051723/
0387-5016
日本機械学會論文集 B編
71
711
2694
2701
https://nagoya.repo.nii.ac.jp/record/7404/files/JsMecEngB_71-711-2694.pdf
application/pdf
671.3 kB
2018-02-19