Conference proceeding
Simulation of Acoustic Streaming in a Resonator
Volume 2, Parts A and B, v 2, pp 423-430
01 Jan 2004
Abstract
Formation of vortical flow structures in a rectangular enclosure due to acoustic streaming is investigated numerically. The oscillatory flow field in the enclosure is created by the vibration of a vertical side wall of the enclosure. The frequency of the wall vibration is chosen such that a standing wave forms in the enclosure. The interaction of this standing wave with the horizontal solid walls leads to the production of Rayleigh type acoustic streaming flow patterns in the enclosure. All four walls of the enclosure considered are thermally insulated. The fully compressible form of the Navier-Stokes equations is considered and an explicit time-marching algorithm is used to explicitly track the acoustic waves. Numerical solutions are obtained by employing a highly accurate flux corrected transport (FCT) algorithm for the convection terms. A time-splitting technique is used to couple the viscous and diffusion terms of the full Navier-Stokes equations. Non-uniform grid structure is employed in the computations. The simulation of the primary oscillatory flow and the secondary (steady) streaming flows in the enclosure is performed. Streaming flow patterns are obtained by time averaging the primary oscillatory flow velocity distributions. The effect of the amount of wall displacement on the formation of the oscillatory flow field and the streaming structures are studied. Computations indicate that the nonlinearity of the acoustic field increases with increasing amount of the vibration amplitude. The form and the strength of the secondary flow associated with the oscillatory flow field and viscous effects are found to be strongly correlated to the maximum displacement of the vibrating wall. Total number of acoustic streaming cells per wavelength is also determined by the strength and the level of the nonlinearity of the sound field in the resonator.
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2 citations in Scopus
Details
- Title
- Simulation of Acoustic Streaming in a Resonator
- Creators
- Bakhtier Farouk - Drexel UniversityMurat K Aktas - Drexel University
- Publication Details
- Volume 2, Parts A and B, v 2, pp 423-430
- Conference
- ASME 2004 Heat Transfer/Fluids Engineering Summer Conference (Charlotte, North Carolina, United States, 11 Jul 2004–15 Jul 2004)
- Publisher
- ASMEDC
- Resource Type
- Conference proceeding
- Language
- English
- Academic Unit
- Mechanical Engineering and Mechanics
- Scopus ID
- 2-s2.0-21544438756
- Other Identifier
- 991019173711104721