A Study on Mufflers with Air Flow : 1 st Report Generation of Noise from Expansion Cavity Type Mufflers due to Mean Flow

抄録

This paper presents theoretical and experimental studies on the expansion cavity type mufflers with mean flow. It is shown in this paper that the inlet part of the tail pipe is a point of the largest flow noise generation inside the cavity of the muffler and a very large air flow noise is generated when a jet stream from the inlet pipe directly impacts the tail pipe.