ダイナミック手法による複断面直線開水路乱流のLES

水工学論文集 Volume 49 Page 667-672 published_at 2005-02
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Title ( jpn )
ダイナミック手法による複断面直線開水路乱流のLES
Title ( eng )
Large-eddy simulation of turbulent flow in a straight compound open channel using the dynamic procedure
Creator
Yokojima Satoshi
Source Title
水工学論文集
Volume 49
Start Page 667
End Page 672
Abstract
An large-eddy simulation of a turbulent flow using a dynamic two-parameter model has been carried out for a straight open channel with one flood plain at a Reynolds number of 5,300, based on the hydraulic radius and bulk mean velocity. This can be viewed as an extension of Satoh's simulation [J. Hydr., Coastal and Envir. Engrg. JSCE 628/II-48 (1999) 115] in which the standard Smagorinsky model was employed as an SGS stress model. Overall, the computational results agree quite well with laboratory measurements by Tominaga and Nezu [J. Hydr. Engrg. ASCE 117 (1991) 21] in spite of difference in their Reynolds numbers and show that the present method is a promising tool for natural river predictions.
Keywords
large-eddy simulation
compound open channel
dynamic two-parameter model
NDC
Construction. Civil engineering [ 510 ]
Language
jpn
Resource Type journal article
Publisher
土木学会
Date of Issued 2005-02
Publish Type Author’s Original
Access Rights open access
Source Identifier
[ISSN] 0916-7374
[NCID] AN10426673