書誌事項
- タイトル別名
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- A Study of the Geometry of Flow Patterns in a Simulated Compressible Mixing Layer.
- アッシュクセイ コンゴウソウ ノ イソウ キカガク トポロジー テキ コウゾウ
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抄録
The geometry of flow patterns in a numerically simulated compressible mixing layer was studied using three-dimensional critical point theory. The solution trajectories for three first-order linear differential equations are used to classify the elementary three-dimensional flow patterns defined by instantaneous streamlines. Fluid motions characterized by high rates of kinetic energy dissipation and/or high enstrophy are of particular interest. It is found that motions corresponding to high rates of dissipation are characterized by a 3-D rate-of-strain topology which is of the saddle-saddle-unstable-node type, similar to the incompressible mixing layer. The topolygy of the unstable focus compressing type is observed for helical pairing motions of the vortical structures. Fluid motions corresponding to high rates of dilatation dissipation are also characterized by the same topology as the solenoidal dissipation motions. Regions of high enstrophy are found to be characterized by the topology of the unstable-focus-stretching, type the topologies stable-focus-stretching, unstable-focus-compressing, and stable-focus-compressing types are also observed for these resions.
収録刊行物
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- 日本機械学会論文集B編
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日本機械学会論文集B編 61 (586), 2001-2007, 1995
一般社団法人 日本機械学会
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詳細情報 詳細情報について
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- CRID
- 1390001205893964160
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- NII論文ID
- 130004221733
- 110002394420
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- NII書誌ID
- AN00187441
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- ISSN
- 18848346
- 03875016
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- NDL書誌ID
- 3608215
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- NDL
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- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可