MRT-LBM Analysis of Acoustic Streaming in Standing Waves Between Two-dimensional Flat Plates

doi:10.19596/j.cnki.1001-246x.7558

Abstract

Abstract: Acoustic streaming generated by standing waves between two-dimensional flat plates is analyzed based on multiple relaxation time lattice Boltzmann method (MRT-LBM). Simulation results are in good agreement with approximate analytical solutions of Rayleigh streaming. Effects of viscosity and width between two plates on acoustic streaming in standing waves are studied. Dimensionless velocity distributions of x component with different viscosity at x=L/4 and dimensionless velocity distributions of y component with different viscosity at x=L/2,and effects of widths on boundary layer vortex thickness and formation progress of acoustic streaming in standing waves are revealed. It demonstrates availability of MRT-LBM model in simulating acoustic streaming in standing waves.

Key words: LBM, standing waves, Rayleigh streaming, boundary layer

CLC Number:

ZHOU Tian, LI Xuemin, LIU Feng. MRT-LBM Analysis of Acoustic Streaming in Standing Waves Between Two-dimensional Flat Plates[J]. CHINESE JOURNAL OF COMPUTATIONAL PHYSICS, 2018, 35(1): 39-46.

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