書誌事項
- タイトル別名
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- Effects of Helicity and System Rotation on Homogeneous Decaying Turbulence.
- イチヨウ ゲンスイ ランリュウ ニ オヨボス ヘリシティ ト ザヒョウ カイテン ノ コウカ
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To consider the non-reflection property of the turbulence subjected to system rotation, a new method was proposed to introduce turbulence helicity into an isotropic turbulent flow field for direct numerical simulation (DNS). The effects of the helicity and the rotation on turbulence statistics and vortical structure were investigated by theoretical analysis and DNS of the homogeneous decaying turbulence. The DNS results show that both the rotation and the helicity inhibit the energy decaying. The theoretical analysis shows very different mechanisms for the rotation and the helicity to produce this effect, i.e. the helicity directly decreases the energy transfer while the rotation suppresses the energy transfer due to the so called scrambling effect. The rotation elongates the vortical structure along the rotation axis, and it a appears to weaken this tendency with the presence of the helicity.
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 66 (644), 962-969, 2000
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
- 1390282681159477504
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- NII論文ID
- 130004223786
- 110002392953
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- NII書誌ID
- AN00187441
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- ISSN
- 18848346
- 03875016
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- NDL書誌ID
- 5362063
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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