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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Cebeci–Smith model ： ウィキペディア英語版 Cebeci–Smith model The Cebeci–Smith model is a 0-equation eddy viscosity model used in computational fluid dynamics analysis of turbulent boundary layer flows. The model gives eddy viscosity, $\backslash mu\_t$, as a function of the local boundary layer velocity profile. The model is suitable for high-speed flows with thin attached boundary-layers, typically present in aerospace applications. Like the Baldwin-Lomax model, this model is not suitable for cases with large separated regions and significant curvature/rotation effects. Unlike the Baldwin-Lomax model, this model requires the determination of a boundary layer edge. The model was developed by Tuncer Cebeci and Apollo M. O. Smith, in 1967. == Equations == In a two-layer model, the boundary layer is considered to comprise two layers: inner (close to the surface) and outer. The eddy viscosity is calculated separately for each layer and combined using: :$$ \mu_t = \begin _\text & \mbox y \le y_\text \\ _\text & \mbox y > y_\text \end where $y\_\backslash text$ is the smallest distance from the surface where $\_\backslash text$ is equal to $\_\backslash text$. The inner-region eddy viscosity is given by: :$$ _\text = \rho \ell^2 \left(\frac\right)^2 + \left(\frac\right)^2 \right )^ where :$$ \ell = \kappa y \left( 1 - e^ \right) with the von Karman constant $\backslash kappa$ usually being taken as 0.4, and with :$$ A^+ = 26\left(displacement thickness, given by :$$ \delta_v^ * = \int_0^\delta \left(1 - \frac\right)\,dy and ''F''''K'' is the Klebanoff intermittency function given by :$$ F_K = \left(+ 5.5 \left( \frac \right)^6 \right )^ 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Cebeci–Smith model」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.