Parametric Analysis of Transmission Loss in Expansion Chamber Muffler using Simulation

Abstract

Transmission loss in a muffler is independent of the source and ideally requires an anechoic termination at one end of the muffler. Hence, measuring the same in a lab setup may not always be feasible. Parameters, designated as handles, are employed to optimize designs of lab-grade expansion chamber mufflers. Parameters such as length and ratio of diameters with extended ports are presented for a set of expansion chamber muffler models.