@techreport{oai:jaxa.repo.nii.ac.jp:00043262,
 author = {石井, 隆次 and 松田, 卓也 and 梅田, 吉邦 and 保田, 充彦 and 沢田, 恵介 and 嶋, 英志 and Ishii, Ryuji and Matsuda, Takuya and Umeda, Yoshikuni and Yasuda, Atsuhiko and Sawada, Keisuke and Shima, Eiji},
 month = {Nov},
 note = {Axisymmetric underexpanded supersonic jets are investigated numerically. A time-depended technique of solution is applied to solve the Euler equations for a compressible ideal gas. The characteristics of Mach disk obtained by the calculations are compared with the experiments and a good agreement is obtained. It is shown that the global jet structure with a nearly regular shock pattern which is stable and steady itself, is destabilized by the vortex rings (Kelvin-Helmholtz roll-up) on the jet boundary. These vortices produce shocks inside the jet, which are convected downstream with eddies. This strongly suggests that a time-independent or a time-con-verged solution cannot be expected without making a suitable time-averaging of the time-dependent solutions. Other important instabilities are also investigated., 資料番号: NALSP0008009, レポート番号: NAL SP-8},
 title = {超音速自由噴流の数値シュミレーション},
 year = {1987}
}