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Acoustic Wave Simulation by Lattice Boltzmann Method with D2Q5 and D2Q9 of Different Relaxation Times
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 81st EAGE Conference and Exhibition 2019, Jun 2019, Volume 2019, p.1 - 5
Abstract
Summary
In this abstract, the lattice Boltzmann method (LBM), a kind of mesoscopic method for modeling waves, is introduced to simulate acoustic wave propagation, which is usually simulated by finite difference method (FDM) in seismology. By choosing different discrete velocity models of D2Q5, D2Q9 and different relaxation times of LBM, with the help of the variable-controlling approach, various seismic wavefields can be obtained. Numerical experiments demonstrate that the wavefields of acoustic wave propagation simulated by LBM with D2Q5 of relaxation time as 0.51 can better coincide with those by acoustic FDM.
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