The Direct Aero-Acoustics Simulation of Flow around a Square Cylinder Using the CE/SE Scheme | Zendy

Min Liu | Zendy; Jia Bing Wang | Zendy; Keqi Wu | Zendy

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The Direct Aero-Acoustics Simulation of Flow around a Square Cylinder Using the CE/SE Scheme

Author(s) -

Min Liu,

Jia Bing Wang,

Keqi Wu

Publication year - 2007

Publication title -

journal of algorithms and computational technology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.234

H-Index - 13

eISSN - 1748-3026

pISSN - 1748-3018

DOI - 10.1260/174830107783133905

Subject(s) - aeroacoustics , acoustics , computational aeroacoustics , large eddy simulation , room acoustics , euler equations , flow (mathematics) , cylinder , turbulence , computation , square (algebra) , euler's formula , mathematical analysis , mathematics , physics , mechanics , sound pressure , geometry , algorithm , reverberation

The space-time conservation element solution element (CE/SE) method is applied in the classical around square cylinder flow problem for aeroacoustics simulation. The unsteady Navier-Stokes equation and Euler equation are solved to directly numerical simulate the aero-acoustics field aroused in unsteady turbulent flow. The computation domain is decomposed into sound-near field and sound-far field, they are computed and analyzed. Large eddy simulation (LES) is used to compute the acoustic source while the Ffowcs Williams-Hawkings (FW-H) acoustic analogy is applied to this problem also. Comparing the two methods, qualitative agreement is demonstrated using the frequency-spectrum of a monitor point located at (50D,0). The CE/SE method is able to extract more details about the non-linear relation between the flow and sound.

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