@inproceedings{oai:jaxa.repo.nii.ac.jp:00036782,
 author = {吉澤, 竹志 and 東野, 文男 and 高倉, 葉子 and 小川, 哲 and 吉田, 正廣 and Yoshizawa, Takeshi and Higashino, Fumio and Takakura, Yoko and Ogawa, Satoru and Yoshida, Masahiro},
 book = {航空宇宙技術研究所特別資料, Special Publication of National Aerospace Laboratory},
 month = {Jan},
 note = {航空宇宙技術研究所 7-9 Jun. 1995 東京 日本, National Aerospace Laboratory 7-9 Jun. 1995 Tokyo Japan, キャビティを有する超音速流の数値解析を行った。ここでは、Chakravarthy-OsherのTVD(全変動減少)法を用いて、2次元Navier-Stokes方程式を解いて、流れ場の詳細を可視化するVLES(超大型渦シミュレーション)を実行した。その結果、キャビティ内における渦の出現、消散・減衰、衝撃波やせん断層との干渉などの挙動が明らかになった。流れ場全域の流れ特性は粗大格子を用いて数値解析した。微細格子による数値解析では、粗大格子での大規模渦だけでなく、せん断層中の非定常な小さい渦も確認できた。大規模渦と小さい渦の周期は試験結果と一致した。キャビティ内の複雑な流れ構造を試験で観測するのは困難なので、このような解析には数値シミュレーションが有効である。, Supersonic internal flows with a cavity are numerically investigated. In the present study, the two-dimensional Navier-Stokes equations are solved by using the Chakravarthy-Osher TVD (Total Variation Diminishing) scheme. The VLES (Very Large Eddy Simulation) is executed to capture the flow field in detail. In the present results, the unsteady behavior of the vortices in the cavity, such as their appearance, disappearance and oscillation, and their interaction with shock waves or shear layer is clearly shown. The overall character of the flow field was clearly shown by the computation on coarse grids. The result of the computation on fine grids is that; not only large-scale vortices which had been shown on coarse grids, but also small unsteady vortices in the shear layer, were recognized. The periods of the large-scale vortices and the small vortices are in agreement with those in experiments. Since it is difficult to observe the complicated flow structure inside the cavity experimentally, the numerical simulation is useful for the investigation of this problem., 資料番号: AA0000294014, レポート番号: NAL SP-30},
 pages = {75--80},
 publisher = {航空宇宙技術研究所, National Aerospace Laboratory (NAL)},
 title = {キャビティを有する非定常超音速内部流の数値シミュレーション},
 volume = {30},
 year = {1996}
}