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Other TitleStudy of noise reduction by water droplets
Author(jpn)平石 雅之; 蔦原 道久; 田尻 慎介; 村上 桂一; 青山 剛史
Author(eng)Hiraishi, Masayuki; Tsutahara, Michihisa; Tajiri, Shinsuke; Murakami, Keiichi; Aoyama, Takashi
Author Affiliation(jpn)神戸大学 大学院自然科学研究科; 神戸大学 大学院工学研究科; 神戸大学 大学院自然科学研究科; 宇宙航空研究開発機構; 宇宙航空研究開発機構
Author Affiliation(eng)Kobe University Graduate School of Science and Technology; Kobe University Graduate School of Engineering; Kobe University Graduate School of Science and Technology; Japan Aerospace Exploration Agency; Japan Aerospace Exploration Agency
Issue Date2008-02-29
PublisherJapan Aerospace Exploration Agency (JAXA)
Publication title第39回流体力学講演会/航空宇宙数値シミュレーション技術シンポジウム2007論文集
Proceedings of 39th Fluid Dynamics Conference/Aerospace Numerical Simulation Symposium 2007
Start page113
End page118
Publication date2008-02-29
AbstractThe acoustic noise generated by the jet of a rocket launching becomes a serious problem for an on-board satellite now. It has been known that we can reduce this noise by spraying water into the jet. But this mechanism is not clarified. In this report, we carry out two-dimensional numerical simulations of interaction between water droplets and acoustic sound by the Finite Difference Lattice Boltzmann method. We also carry out the simulation for solid bodies for comparison. It is shown that some differences appear in the sound pressure fields between the two.
DescriptionJAXA Special Publication
Keywordsrocket launching; launching site; aerodynamic noise; aeroacoustics; satellite launching; fairing; water droplet; noise prediction; acoustic attenuation; computerized simulation; acoustic coupling; ロケット打上げ; 射場; 空力騒音; 空力音響学; 衛星打上げ; フェアリング; 水滴; 騒音予測; 音響減衰; 計算機シミュレーション; 音響カップリング
Document TypeConference Paper
JAXA Category特別資料
Report NoJAXA-SP-07-016

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