3D numerical study of acoustic waves using D3Q19-lattice boltzmann model | [Science International • 2021]

Author(s):

1. Jaouad Benhamou: Mechanics & Energetics Laboratory, Faculty of Sciences, Mohammed First University, 60000 Oujda, Morocco

2. El bachir Lahmer: Mechanics & Energetics Laboratory, Faculty of Sciences, Mohammed First University, 60000 Oujda, Morocco

3. Mohammed Jami: Mechanics & Energetics Laboratory, Faculty of Sciences, Mohammed First University,60000 Oujda,Morocco

4. Mohammed Amine Moussaoui: Mechanics & Energetics Laboratory, Faculty of Sciences, Mohammed First University, 60000 Oujda, Morocco

5. Ahmed Mezrhab: Mechanics & Energetics Laboratory, Faculty of Sciences, Mohammed First University, 60000 Oujda, Morocco

Abstract:

This paper proposes a three-dimensional (3D) lattice Boltzmann method (LBM) to analyze the propagation of acoustic waves. Indeed, this numerical method uses a stable and accurate scheme, the D3Q19 multiple relaxation model. The work carried out focuses on studying the vibration of a square sound source located at the center of the left surface of a 3D enclosure filled with water. The main objective of this numerical study is to investigate the waves using a statistical technique and to visualize how acoustic waves emitted by a square source propagate instantaneously in three dimensions. The numerical code used is verified by studying the usual problem of flows generated by a lid-driven cavity. The two-dimensional LBM approach is introduced in a second step to compare the results obtained in two and three dimensions.

Page(s): 279-283

DOI: DOI not available

Published: Journal: Science International, Volume: 33, Issue: 3, Year: 2021

Keywords:

Propagation , acoustic waves , Lattice Boltzmann method , 3D simulation

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