@inproceedings{oai:jaxa.repo.nii.ac.jp:00037409,
 author = {比江島, 俊彦 and 西岡, 通男 and Hiejima, Toshihiko and Nishioka, Michio},
 book = {航空宇宙技術研究所特別資料, Special Publicationa of National Aerospace Laboratory},
 month = {Nov},
 note = {航空宇宙技術研究所 7-9 Oct. 1998 (23th). 24-26 Mar. 1999 (24th) 東京 日本, National Aerospace Laboratory 7-9 Oct. 1998 (23th). 24-26 Mar. 1999 (24th) Tokyo Japan, 圧縮性の効果がなければ、縦渦は超音速流の中では混合を促進させることが期待されるが、縦渦はかなり安定である。それゆえ、混合をさらに促進させるため、渦度分布が軸対称で環状となっている不安定な縦渦を使うことを提案した。提案した渦の不安定性を、時間増幅を仮定しての周方向波数、マッハ数、および渦度分布の様々な組み合わせについて、非粘性で圧縮性を考慮した安定性解析を基に調べた。縦渦の最大増幅モードは、非圧縮性混合層中での変曲点型不安定の場合と同様の性質を持つことを明らかにした。, Being free from the compressibility effect, streamwise vortices are expected to enhance mixing in supersonic flow, but being rather stable. Therefore, for the purpose of greatly increasing mixing capability, the present authors proposed to use unstable streamwise vortices, which are axisymmetric under annular in vorticity distribution and greatly increasing mixing capability. The instability characteristics of proposed vortex was investigated on the basis of inviscid compressible stability analysis for various combinations of circumferential wave numbers, Mach numbers and vorticity distribution assuming temporal growth. It is found that the maximum growth mode of streamwise vortex has the same character as that of inflectional instability in incompressible mixing layer., 資料番号: AA0001960012, レポート番号: NAL SP-43},
 pages = {37--40},
 publisher = {航空宇宙技術研究所, National Aerospace Laboratory (NAL)},
 title = {圧縮性縦渦の不安定性},
 volume = {43},
 year = {1999}
}