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You are here : eLibrary : IAHR World Congress Proceedings : 36th Congress - The Hague (2015) ALL CONTENT : Water engineering : Large eddy simulation method for flood flow with large movement of free surface and wetting front
Large eddy simulation method for flood flow with large movement of free surface and wetting front
Author : AKIHIKO NAKAYAMA(1)
ulation method that can be used to predict flood flows in natural rivers with varying discharge rates and
the large movement of wetting front is presented. The method is constructed on the fixed rectangular grid identifying the
position of the vertical position of the free surface in each grid that contains the free surface. The rest of the technique is
similar to many other LES methods for flows in fixed fluid domain. One important difference is that the boundary
condition on the bed is not applied on the velocity but the wall stress obtained from the wall-law is applied, so that the
bed resistance is predicted well without resolving the viscous layer near the bed. Validation of the method in the
collapsing water column and in curved channel is very good. Application to a real river is also reasonable.Form Required :
File Size : 1,465,304 bytes
File Type : Adobe Acrobat Document
Chapter : IAHR World Congress Proceedings
Category : 36th Congress - The Hague (2015) ALL CONTENT
Article : Water engineering
Date Published : 20/08/2015
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