@inproceedings{oai:jaxa.repo.nii.ac.jp:00005612,
 author = {若山, 一樹 and 鈴木, 宏二郎 and Wakayama, Kazuki and Suzuki, Kojiro},
 book = {宇宙航空研究開発機構特別資料: 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, JAXA Special Publication: Proceedings of 39th Fluid Dynamics Conference/Aerospace Numerical Simulation Symposium 2007},
 month = {Feb},
 note = {For the purpose of reducing drag and further speeding up of high-speed train, the axisymmetric Navier-Stokes analyses have been numerically conducted around a bullet train running in depressurized tube. The flows around a simple axisymmetric body, which runs in high subsonic and transonic regimes at velocity more than 500 km/h and freestream pressure 0.001 atm, was solved for various tunnel diameters. When the train speed increases or the diameter of the tunnel decreases, the pressure on the nose tip of the train rises and the separation in the rear part of the train becomes more significant. As a result, the 'drag divergence' phenomena were observed on the plots of the relation between the drag coefficient and the freestream Mach number. The results show that when the tube is depressurized to 0.001 atm, further speeding up becomes possible with smaller power requirement than the existing Shinkansen bullet train., 資料番号: AA0063742006, レポート番号: JAXA-SP-07-016},
 pages = {33--38},
 publisher = {宇宙航空研究開発機構, Japan Aerospace Exploration Agency (JAXA)},
 title = {チューブトレインの亜音速/遷音速空力特性の数値解析},
 volume = {JAXA-SP-07-016},
 year = {2008}
}