National Aerospace Laboratory CFD Technology Center
National Aerospace Laboratory CFD Technology Center
Tokyo University of Science Department of Mechanical Engineering, Faculty of Science and Technology
出版者
宇宙航空研究開発機構
出版者（英）
Japan Aerospace Exploration Agency (JAXA)
雑誌名
宇宙航空研究開発機構特別資料: 航空宇宙数値シミュレーション技術シンポジウム2003論文集
雑誌名(英)
JAXA Special Publication: Proceedings of Aerospace Numerical Simulation Symposium 2003
巻
JAXA-SP-03-002
ページ
53 - 58
発行年
2004-03-25
抄録（英）
Direct numerical simulation of a fully developed turbulent channel flow has been carried out using new NS system at NAL. The Reynolds numbers are set to be Re(sub tau) = 180 and 1,020, where Re(sub tau) is the Reynolds number based on the friction velocity and the channel half width. To the present knowledge, DNS for Re(sub tau) = 1,020 is one of the largest computations ever simulated in conjunction with this configuration, where about 1.4 billion grid points are required to resolve all the eddies. In the present study, the Reynolds-number dependence on turbulence statistics is investigated up to Re(sub tau) = 1,020. Moreover, turbulence structures for Re(sub tau) = 1,020 are visualized in order to examine the characteristics of quasi-coherent structures such as high and low-speed streaks and vortices.
航技研新数値シミュレータシステムによる平行平板間乱流の大規模DNS
47427010.pdf
(1.14MB)
