Application of linear and non-linear k-ε models to flows around spur dikes

水工学論文集 Volume 42 Page 643-648 published_at 1998-02
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Title ( eng )
Application of linear and non-linear k-ε models to flows around spur dikes
Creator
Peng Jing
Source Title
水工学論文集
Volume 42
Start Page 643
End Page 648
Abstract
This paper is concerned with three-dimensional numerical analysis of turbulent flows around submerged spur-dikes. A finite volume method is employed to discretize the governing equations. A nonlinear k-ε model proposed by Shih et al. and a linear k-ε model modified by Zhu-Shih are applied to two cases of flow with different spur dikes. The comparison with measured data shows that the nonlinear k-ε model reproduces mean velocity field better than the modified linear k-ε model in the two cases. The reason of the superiority of the non-linear model is discussed. It is shown, however, that further improvement in the numerical model is required to reproduce the complex flow phenomena accurately.
Keywords
spur dikes
turbulent flow
linear k-ε model
non-linear k-ε model
three-dimensionality
NDC
Construction. Civil engineering [ 510 ]
Language
eng
Resource Type journal article
Publisher
土木学会
Date of Issued 1998-02
Publish Type Version of Record
Access Rights open access
Source Identifier
[ISSN] 0916-7374
[NCID] AN10426673