Numerical simulation of tonal fan noise of computers and air conditioning systems
- Authors: Aksenov A.A.1, Gavrilyuk V.N.2, Timushev S.F.2
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Affiliations:
- OOO Tesis
- Department 202
- Issue: Vol 62, No 4 (2016)
- Pages: 447-455
- Section: Atmospheric and Aeroacoustics
- URL: https://journals.rcsi.science/1063-7710/article/view/185769
- DOI: https://doi.org/10.1134/S1063771016040011
- ID: 185769
Cite item
Abstract
Current approaches to fan noise simulation are mainly based on the Lighthill equation and socalled aeroacoustic analogy, which are also based on the transformed Lighthill equation, such as the wellknown FW-H equation or the Kirchhoff theorem. A disadvantage of such methods leading to significant modeling errors is associated with incorrect solution of the decomposition problem, i.e., separation of acoustic and vortex (pseudosound) modes in the area of the oscillation source. In this paper, we propose a method for tonal noise simulation based on the mesh solution of the Helmholtz equation for the Fourier transform of pressure perturbation with boundary conditions in the form of the complex impedance. A noise source is placed on the surface surrounding each fan rotor. The acoustic fan power is determined by the acoustic-vortex method, which ensures more accurate decomposition and determination of the pressure pulsation amplitudes in the near field of the fan.
About the authors
A. A. Aksenov
OOO Tesis
Author for correspondence.
Email: andrey@tesis.com.ru
Russian Federation, ul. Yunnatov 18/706, Moscow, 127083
V. N. Gavrilyuk
Department 202
Email: andrey@tesis.com.ru
Russian Federation, Volokolamskoe sh. 4, Moscow, 125993
S. F. Timushev
Department 202
Email: andrey@tesis.com.ru
Russian Federation, Volokolamskoe sh. 4, Moscow, 125993