書誌事項
- タイトル別名
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- Asymptotic Form of Lagrangian Spectrum Function of Turbulence
- ミダレ ノ Lagrange スペクトル ノ ゼンキン ケイ
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説明
Working equation for the Lagrangian spectrum function over the entire range of Lagrangian turbulon frequencies is proposed. The principal assumptions are that the evolution of the state of a selected particle in time forms a Markov process and that the spectrum function is a rapidly decreasing function. The asymptotic form of the spectrum is expressed in the form, E₁₁(ω) = AL<ε>/ω₀² exp[-c²(ω/ω∞)²] / 1+(ω/ω₀)² where AL is the universal constant. AL ≈ c/4. 4. <ε> is the kinetic energy dissipation rate. ω is the Lagrangian turbulon frequency. The subscripts, 0 and ∞, mean the largest and the smallest turbulon respectively. This form behaves like ω⁻² in the inertial range and as an exponential decay in the viscous range. The result is applied to the estimation of the energy dissipation by solid particles suspended in a turbulent fluid.
収録刊行物
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- 信州大学工学部紀要
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信州大学工学部紀要 32 217-225, 1972-07-25
信州大学工学部
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詳細情報 詳細情報について
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- CRID
- 1050001338923048064
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- NII論文ID
- 120007104504
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- NII書誌ID
- AN00121228
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- ISSN
- 00373818
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- HANDLE
- 10091/3188
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- NDL書誌ID
- 7561195
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- 本文言語コード
- ja
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- 資料種別
- departmental bulletin paper
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- データソース種別
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- IRDB
- NDL
- CiNii Articles