Ml. Munjal et al., TRANSFER-MATRIX MODEL FOR THE REVERSE-FLOW, 3-DUCT, OPEN-END PERFORATED ELEMENT MUFFLER, Applied Acoustics, 54(3), 1998, pp. 229-238
A frequency-domain analytical model is presented for a reverse-flow, t
hree-duct, open-end perforated element muffler, starting with the basi
c equations of mass continuity, momentum balance and isentropicity. Th
e transfer matrix so derived is used in predictions of level differenc
e (or the so-called noise reduction) across such a muffler, which are
shown to compare quite well with the measured values, for a moving as
well as stationary medium. (C) 1998 Elsevier Science Ltd. All rights r
eserved.