NDLI: Aerodynamic noise propagation simulation using immersed boundary method and finite volume optimized prefactored compact scheme

Content Provider	Springer Nature Link
Author	Liu, Min Wu, Keqi
Copyright Year	2008
Abstract	Based on the immersed boundary method (IBM) and the finite volume optimized pre-factored compact (FVOPC) scheme, a numerical simulation of noise propagation inside and outside the casing of a cross flow fan is established. The unsteady linearized Euler equations are solved to directly simulate the aero-acoustic field. In order to validate the FVOPC scheme, a simulation case: one dimensional linear wave propagation problem is carried out using FVOPC scheme, DRP scheme and HOC scheme. The result of FVOPC is in good agreement with the analytic solution and it is better than the results of DRP and HOC schemes. the FVOPC is less dispersion and dissipation than DRP and HOC schemes. Then, numerical simulation of noise propagation problems is performed. The noise field of 36 compact rotating noise sources is obtained with the rotating velocity of 1000r/min. The PML absorbing boundary condition is applied to the sound far field boundary condition for depressing the numerical reflection. Wall boundary condition is applied to the casing. The results show that there are reflections on the casing wall and sound wave interference in the field. The FVOPC with the IBM is suitable for noise propagation problems under the complex geometries for depressing the dispersion and dissipation, and also keeping the high order precision.
Starting Page	361
Ending Page	367
Page Count	7
File Format	PDF
ISSN	10032169
Journal	Journal of Thermal Science
Volume Number	17
Issue Number	4
e-ISSN	1993033X
Language	English
Publisher	SP Science Press
Publisher Date	2008-12-05
Publisher Place	Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	immersed boundary method finite volume optimized prefactored compact scheme noise Engineering Thermodynamics, Heat and Mass Transfer Engineering Fluid Dynamics Mechanics, Fluids, Thermodynamics
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics

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