Finite Elements Simulations of Noise Damping in a Muffler
Journal Title: Romanian Journal of Acoustics and Vibration - Year 2009, Vol 6, Issue 2
Abstract
This study represents an investigation of the COMSOL Finite Elements (FE) capabilities of simulating noise reduction techniques. This general purpose FE code has an acoustics module, from which the present study investigates one type of muffler used in the automotive industry. A comparison is made between a reference design model and an improved model with a number of holes in the two ducts of the muffler. The results indicate that such a design tool can be successfully used in other applications concerning noise reduction such as exhaust nozzles.
Authors and Affiliations
Mihai Predoi
Keywords
Related Articles
- EP ID EP97188
- DOI -
- Views 77
- Downloads 0
THE REDUCTION OF NOISE AND VIBRATION CAUSED BY EQUIPMENT FROM BUILDINGS
Many times, in everyday life, we encounter a variety of problems arising from the inadequate functioning of equipment from civil and industrial constructions. Among the existing equipment in the construction of the buil...
Analysis of the Sound Field in Enclosures
Steady-state sound field in closed spaces may be calculated as a series of normal modes of oscilatings. Experimental results are not explained completely by this theory and for these differences should be an additional t...
Test Bench for Semi-Active Magnetorheological Fluid Damper Using a Modified Charpy Pendulum
The paper presents an experimental stand for testing a semi-active damper with magnetorheological fluid (MRF.) For reduce costs and time of execution, the solution has been found is to alter a Charpy pendulum. Are detail...
Investigation of the Noise at the Limit of Functional Zones
Within the context of sustainable development and environmental protection, a special concern is addressed to the study of noise generation and propagation in the environment. An important contribution to the noise gener...
Dynamic Hydraulic Dampers for Earthquake Isolated Structural Systems
This paper presents some solutions on hydraulic devices such as linear motors with direct and reverse reaction with the stabilizing role of building movement under the earthquake action. It emphasizes the possibilities o...