@article {Ji:2010:0736-2501:12,
title = "Influence of mean flow on acoustic attenuation performance of straight-through perforated tube reactive silencers and resonators",
journal = "Noise Control Engineering Journal",
parent_itemid = "infobike://ince/ncej",
publishercode ="ince",
year = "2010",
volume = "58",
number = "1",
publication date ="2010-01-01T00:00:00",
pages = "12-17",
itemtype = "ARTICLE",
issn = "0736-2501",
url = "https://ince.publisher.ingentaconnect.com/content/ince/ncej/2010/00000058/00000001/art00002",
doi = "doi:10.3397/1.3244593",
keyword = "34.1, 26.1.2",
author = "Ji, Z. L. and Xu, H. S. and Kang, Z. X.",
abstract = "The three-dimensional (3-D) time-domain CFD approach is employed to predict and analyze the acoustic attenuation performance of straight-through perforated tube reactive silencers and resonators. A pressure pulse is imposed at the inlet, and then the 3-D unsteady flow computation is
performed to acquire the time histories of the pressures at the upstream and downstream of silencer. The pressures in time-domain are then transformed to the acoustic pressures in frequency-domain by using FFT to determine the transmission loss of silencer may be determined. Transmission loss
predictions of straight-through perforated tube reactive silencers without and with mean flow are compared with experimental results available in the literature, and reasonable agreements are observed. The 3-D time-domain CFD approach is then used to investigate the influence of mean flow
on acoustic attenuation performance of straight-through perforated tube reactive silencers and resonators. The numerical results show that mean flow decreases the transmission loss at lower frequencies somewhat and resonance peaks remarkably of straight-through perforated tube reactive silencers
and resonators and increases the acoustic attenuation at higher frequencies, especially above the plane wave cut-off frequency.",
}