ABSTRACT Theoretical and experimental studies in thermoacoustics successfully explained the phenomena with linear inviscid theory at lower oscillation amplitudes. The theory is inadequate at higher oscillations because of dominant nonlinear and multidimensional effects. This study is part of a research into the simulation of the nonlinear behavior of fluid in an acoustic chamber at near incompressible flow. A time-dependent compressible Navier-Stokes system was solved for a two-dimensional rectangular chamber with a membrane and a closed end on the other. The generation and progression of the simulated velocity field observed is significantly complex which include beatings, vortex motions, and cross-waves, among others. Computations have shown vortex shedding behavior near the membrane acoustic driver as well as near heat exchanging plates when they are included for both pure Helium and mixtures. Simulations also showed acoustic streaming, a secondary flow forced by the acoustic waves. Quantitatively small, the streaming flow increases steadily with time. The paper reports the simulation results obtained. These complexities have only been previously reported independently and to date many open questions still remain on some issues.
N., M., & P., M. (2008). SIMULATION OF ACOUSTIC GENERATION AND PROGRESSION IN A CLOSED CHAMBER. The International Conference on Applied Mechanics and Mechanical Engineering, 13(13th International Conference on Applied Mechanics and Mechanical Engineering.), 1-9. doi: 10.21608/amme.2008.39376
MLA
MOHD-GHAZALI N.; McHUGH J. P.. "SIMULATION OF ACOUSTIC GENERATION AND PROGRESSION IN A CLOSED CHAMBER". The International Conference on Applied Mechanics and Mechanical Engineering, 13, 13th International Conference on Applied Mechanics and Mechanical Engineering., 2008, 1-9. doi: 10.21608/amme.2008.39376
HARVARD
N., M., P., M. (2008). 'SIMULATION OF ACOUSTIC GENERATION AND PROGRESSION IN A CLOSED CHAMBER', The International Conference on Applied Mechanics and Mechanical Engineering, 13(13th International Conference on Applied Mechanics and Mechanical Engineering.), pp. 1-9. doi: 10.21608/amme.2008.39376
VANCOUVER
N., M., P., M. SIMULATION OF ACOUSTIC GENERATION AND PROGRESSION IN A CLOSED CHAMBER. The International Conference on Applied Mechanics and Mechanical Engineering, 2008; 13(13th International Conference on Applied Mechanics and Mechanical Engineering.): 1-9. doi: 10.21608/amme.2008.39376
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