@inproceedings{0efb2d0dea554e7bb517a4125579401c,
title = "The Webster equation revisited",
abstract = "The problem of low-frequency sound propagation in slowly varying ducts is systematically analysed as a perturbation problem of slow variation. The Webster equation and some variants are derived, and the entrance/exit plane boundary layer is given. It is shown why a varying lined duct in general does not have a solution.",
author = "Rienstra, {Sjoerd W.}",
year = "2002",
doi = "10.2514/6.2002-2520",
language = "English",
isbn = "9781624101199",
series = "8th AIAA/CEAS Aeroacoustics Conference and Exhibit",
publisher = "American Institute of Aeronautics and Astronautics Inc. (AIAA)",
booktitle = "8th AIAA/CEAS Aeroacoustics Conference and Exhibit",
address = "United States",
note = "8th AIAA/CEAS Aeroacoustics Conference and Exhibit, 2002 ; Conference date: 17-06-2002 Through 19-06-2002",
}