衝撃波にたいする消音器の特性に関する研究 : 第1報,消音器内の衝撃波の伝播の様子 (<小特集>衝撃波現象とその工学的応用)

概要

論文の詳細を見る
In connection with the reduction of exhaust noise in automobile gasoline engines an experimental investigation was carried out on the initiation and propagation of shock waves in the exhaust gas flow. The pressure measurement along the exhaust gas pipe clearly shows a non linear transition of compression waves into shock waves. In order to obtain direct evidence of shock waves in the exhaust gas pipe, a holographic interfherometric flow visualization study was also conducted. Shock waves of Ms = 1.1 were observed. For the purpose of obtaining data for designing a silencer configuration which can effectively suppress a shock wave, shock tube experiments and numerical simulations were carried out. Resultsindicate that, in the design of silencers, the non linear wave propagation effect should be takeninto account and a double-chamber silencer is preferable.
一般社団法人日本機械学会の論文
1994-07-25