@inproceedings{oai:jaxa.repo.nii.ac.jp:00002952, author = {榎本, 俊治 and 石井, 達哉 and 赤見坂, 祐輔 and 藤, 秀実 and Enomoto, Shunji and Ishii, Tatsuya and Akamisaka, Yusuke and To, Hidemi}, book = {宇宙航空研究開発機構特別資料: 第50回流体力学講演会/第36回航空宇宙数値シミュレーション技術シンポジウム論文集, JAXA Special Publication: Proceedings of the 50th Fluid Dynamics Conference / the 36th Aerospace Numerical Simulation Symposium}, month = {Feb}, note = {第50回流体力学講演会/第36回航空宇宙数値シミュレーション技術シンポジウム (2018年7月4日-6日. 宮崎市民プラザ), 宮崎市, 宮崎, 50th Fluid Dynamics Conference /the 36th Aerospace Numerical Simulation Symposium (July 4-6, 2018. Miyazaki Citizen's Plaza), Miyazaki, Japan, As aircraft noise regulation becomes severe year by year, aFJR (Advanced fan Jet Research) project of JAXA conducted research and development on light weight sound absorption liner technology from 2014 to 2018. In this research, we attempted to develop a method to predict the sound absorption coefficient by numerical analysis of the flow field when glazing flow exists. Assuming laminar and two-dimensional flow, numerical calculation of the flow field with glazing flow and sound wave was performed, and the sound absorption coefficient was evaluated. The sound absorption obtained by the calculation and the sound absorption obtained by the experiment qualitatively agreed well. In the presence of glazing flow, it was found that the sound absorbing cell was not much resonant. The fact that sound absorption occurs even though the sound absorbing cell is not strongly resonating suggests that a phenomenon different from the Helmholtz resonance occurs in the sound absorbing liner having a glazing flow., 形態: カラー図版あり, Physical characteristics: Original contains color illustrations, 資料番号: AA1830029023, レポート番号: JAXA-SP-18-005}, pages = {189--194}, publisher = {宇宙航空研究開発機構(JAXA), Japan Aerospace Exploration Agency (JAXA)}, title = {グレージング流れを伴う吸音ライナの数値解析}, volume = {JAXA-SP-18-005}, year = {2019} }