@inproceedings{oai:jaxa.repo.nii.ac.jp:00037079,
 author = {山本, 稀義 and 生出, 伸一 and 佐藤, 司 and 細川, 巌 and Yamamoto, Kiyoshi and Oide, Shinichi and Sato, Tsukasa and Hosokawa, Iwao},
 book = {航空宇宙技術研究所特別資料, Special Publication of National Aerospace Laboratory},
 month = {Jul},
 note = {26-27 Sep. 1996 (19th), 26-27 Sep. 1996 (19th), 数値風洞を用いて、減衰一様等方性乱流の高分解能(空間格子点数512(exp 3))直接数値シミュレーション(DNS)を行い、流速、渦度および温度などの発達した種々の乱流場を得た。乱流場の流れ構造を調べるため、渦度および温度場を可視化した。その結果、まず、渦度の強い領域がシート状に渦層として集中し、次に渦層がケルビン・ヘルムホルツの不安定性により巻き上げられ、最後に微細なみみずと称する渦管になる。一方、強い温度勾配は、局所的なシート状層に集中する。, Direct Numerical Simulation (DNS) of decaying homogeneous isotropic turbulence with a high resolution (512(exp 3) spatial mesh points) is carried out using the numerical wind tunnel, and fully developed turbulent fields, such as the velocity, vorticity and temperature, are obtained. To search organized structures in the turbulent fields, the vorticity and temperature fields are visualized. As a result, the intense regions of vorticity concentrate into sheet-like layers at first. Then, the layers are rolled up by the Kelvin-Helmholtz instability, and ultimately, become to fine vortex tubes, which are called worms. On the other hand, the intense temperature gradient concentrates into local sheet-like layers., 資料番号: AA0001127002, レポート番号: NAL SP-35},
 pages = {5--9},
 publisher = {航空宇宙技術研究所, National Aerospace Laboratory (NAL)},
 title = {乱流微細構造の可視化},
 volume = {35},
 year = {1997}
}