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

Author(s)

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

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

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

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

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.

Publication Details

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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