Design and Analysis of Reactive Silencer Modeling with FEM & BEM -Result

SYSNOISE is an FEM/BEM based computational acoustics program that allows users to input a geometry, impose boundary conditions, select environmental parameters, and solve the system of resulting equations in one, two or three dimensions. Once the system has been solved, a host of post-processing options are available to determine the various performance characteristics. Using command line code, it was possible to perform the calculations for all three methods, utilizing both FEM and BEM, and in both two and three dimensions. ACOUSTIC ANALYSIS IN SYSNOISE BY FEM: Purpose of FEM Acoustics module - Solve the Helmholtz equation inside internal Fluid domains - Method suited for interior noise - Radiation application can be handled with Infinite Elements - Acoustic modes of the fluid volume can be easily computed - Acoustic modal response can be quickly performed when modes are present - In FEM fluid the boundary conditions are always applied on the FACES of an element.