Numerical Models for the Analysis of the Acoustic Wave Propagation-Reference-Cited by-同舟云学术

Numerical Models for the Analysis of the Acoustic Wave Propagation

Published:2019-06-01 Issue:3 Volume:25 Page:136-143
ISSN:2451-3113
Container-title:International conference KNOWLEDGE-BASED ORGANIZATION
language:en
Short-container-title:

Author:

Năstăsescu Vasile¹,Bârsan Ghiță²,Marzavan Silvia¹

Affiliation:

1. “Ferdinand I” Military Technical Academy , Bucharest , Romania

2. “Nicolae Bălcescu” Land Forces Academy , Sibiu , Romania

Abstract

Abstract This paper presents some authors’ results regarding numerical modelling of the acoustic wave propagation, using the Ansys program. The acoustic wave propagation is studied under conditions of existence of acoustic absorbing panels. Different materials are taken into account (aluminium, foam, oak, polystyrene) for considered acoustic absorbing panels. Also, different dimensions and different cases for fixing the panels were considered. The acoustic wave propagation was studied in stationary conditions and in dynamic conditions at different values of sound frequencies. A comparative analysis is performed regarding the influence of different conditions upon acoustic wave propagation. Our studies presented in this paper are referring to the acoustic propagation in an open space, like on airports or around the acoustic sources placed in open space. The aim of this paper is to offer our experience in this field for a numerical analysis of the ways for sound level reduction. Also the facilities of the Ansys program for the solving of such problems are presented in a practical manner of use.

Publisher

Walter de Gruyter GmbH

Subject

General Medicine

Link

https://www.sciendo.com/pdf/10.2478/kbo-2019-0129

Reference12 articles.

1. [1] Bathe, K-J., Finite Element Procedures, Prentice-Hall, Inc., 1996.

2. [2] Coyewe, J., P., Vanderborck, G., Steichew, W., A coupling procedure for modeling acoustic problems using finite elements and boundary elements, Journal de Physique IV, Colloque C5, supplement au Journal de Physique III, Volume 4, May 1994.10.1051/jp4:1994568

3. [3] Hristev Anatolie, Mecanica si Acustica, Editura Didactica si Pedagogica, Bucharest, 1984.

4. [4] Langdon, S., Chandler-Wilde, S., N., Finite element methods for acoustic scattering, Lecture notes, Department of Mathematics, University of Reading, Berkshire, UK, July 18, 2007.

5. [5] Kinsler E. Lawrence, Austin R. Frey, Alan B. Coppens, James V. Sanders, Fundamentals of Acoustics, Fourth Edition, John Wiley & Sons, Inc., 2000.