Computer Aided Design on Single Expansion Muffler with Extended Tube under Space Constraints

The optimization approach of maximal STL (sound transmission loss) and muffler dimension under space constraints within a building or machine room is fully addressed throughout the graphic analyses as well as the computer-aided numerical assessments in this paper. The primary set of design data is derived by the computer graphic analysis on sensitivity, and the successive algorithm of iteration techniques based on the initial design data is then carried out individually. These results are moreover compared with each other for the accuracy purpose. The theoretical and simulated results are found in good agreements. The optimal approach on the design of single expansion muffler with extended tube proposed in this study surely provides a quick and economical procedure to optimize the single expansion muffler with the maximal sound transmission loss under space limitations without redundant testing.