@inproceedings{oai:jaxa.repo.nii.ac.jp:00046351, author = {渡辺, 大輔 and Watanabe, Daisuke}, book = {宇宙航空研究開発機構特別資料: 第51回流体力学講演会/第37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 51st Fluid Dynamics Conference / the 37th Aerospace Numerical Simulation Symposium}, month = {Feb}, note = {第51回流体力学講演会/第37回航空宇宙数値シミュレーション技術シンポジウム (2019年7月1日-3日. 早稲田大学早稲田キャンパス国際会議場), 新宿区, 東京, 51st Fluid Dynamics Conference / the 37th Aerospace Numerical Simulation Symposium (July 1-3, 2019. International Conference Center, Waseda University), Shinjuku-ku, Tokyo, Japan, The three-dimensional compressible Navier-Stokes equations are numerically solved to study effect of the velocity component of inflow disturbance on receptivity of helical mode in a supersonic round jet at high convective Mach numbers. Initial disturbances with only u(sub r), u(sub θ) and u(sub x) velocity components are compared. The numerical results show that the inflow disturbance of the only u(sub r) component is easily accepted into the jet as the helical mode than the case of the only u(sub θ) component and u(sub x) component without azimuthal wave number dependency. In addition, the magnitudes of the pressure fluctuations emitted from the jet are approximately equal when the diffusion start time of the jet is the same. There are less dependence of initial condition's velocity component in the jet sound field., 形態: カラー図版あり, Physical characteristics: Original contains color illustrations, 資料番号: AA1930011010, レポート番号: JAXA-SP-19-007}, pages = {135--139}, publisher = {宇宙航空研究開発機構(JAXA), Japan Aerospace Exploration Agency (JAXA)}, title = {超音速ジェットの拡散に及ぼす撹乱速度成分の影響}, volume = {JAXA-SP-19-007}, year = {2020} }