| Title |
Low frequency traffic noise prediction and modelling of noise barriers using FEM / |
| Authors |
Saliunas, Darius ; Volkovas, Vitalijus |
| Full Text |
|
| Is Part of |
Vibroengineering procedia: 17th international conference “Vibroengineering – 2014”, Katowice, Poland, 13-15 October, 2014 .. Kaunas : JVE International. 2014, vol. 3, p. 313-318.. ISSN 2345-0533. eISSN 2538-8479 |
| Keywords [eng] |
low frequency noise ; traffic noise ; noise barries ; noise impact assessment ; noise screen enchancement |
| Abstract [eng] |
The paper is a part of investigation near one of the busiest Lithuanian roads with big percentage of heavy traffic where the spectrum of traffic noise and efficiency of existing noise screens also enhancement of them have been studied. The paper presents use of finite element method (FEM) for traffic noise prediction at low (16-200Hz) frequencies also for modelling of noise barriers andenhancement of them by adding tops (heads). Acoustic field transformation simulation model is prepared within COMSOL software. Model is verifield according investigation in situ (measurements) and deals with divergence loss, diffraction from obstacles,absorption and reflection from surfaces of cylindrical sound waves solving Helmholtz equation. Numerical prediction showed that investigated additional tops can improve effectiveness of noise barrier either at low frequencies (Leq(16-200Hz)) up to ~2 dB and up to ~7dB at discrete frequencies. |
| Published |
Kaunas : JVE International |
| Type |
Conference paper |
| Language |
English |
| Publication date |
2014 |
| CC license |
|
