@inproceedings{oai:jaxa.repo.nii.ac.jp:00005462,
 author = {坂尾, 富士彦 and Sakao, Fujihiko},
 book = {宇宙航空研究開発機構特別資料: 境界層遷移の解明と制御研究会講演論文集（第41回・第42回）, JAXA Special Publication: Proceedings of the 41st and 42nd JAXA Workshops on Investigation and Control of Boundar-Layer Transition},
 month = {Feb},
 note = {第41回「境界層遷移の解明と制御」研究会（2007年10月4日-10月5日）, Aerodynamic sound emitted by flow through a finite length duct with corrugated inner surface is experimentally investigated. As the mechanism of sound generating oscillation, so far popular 'cavity-tone' mechanism was definitely denied. The principal reason is: With corrugation of helical geometry, no characteristic sound came on, while a pair of a nozzle edge and a leading edge both of which are helical, with constant distance, made essentially as loud sound as a pair of normal edges. Other reasons are: Sound level exponentially depends on the total length of the corrugated part, and frequency of principal peak coincide with the estimated value based on corrugation pitch, rather than on the length of recess., 形態: カラー図版あり, 資料番号: AA0064237004, レポート番号: JAXA-SP-08-006},
 publisher = {宇宙航空研究開発機構, Japan Aerospace Exploration Agency (JAXA)},
 title = {内面ヒダ付き管の気流音},
 volume = {JAXA-SP-08-006},
 year = {2009}
}