Reference : How to simulate quickly and efficiently a flow over a spillway ?
Scientific congresses and symposiums : Unpublished conference/Abstract
Engineering, computing & technology : Civil engineering
http://hdl.handle.net/2268/168673
How to simulate quickly and efficiently a flow over a spillway ?
English
Goffin, Louis mailto [Université de Liège - ULiège > Département ArGEnCo > HECE (Hydraulics in Environnemental and Civil Engineering) >]
Erpicum, Sébastien mailto [Université de Liège - ULiège > > Scientifiques attachés au Doyen (Sc.appliquées) >]
Dewals, Benjamin mailto [Université de Liège - ULiège > Département ArGEnCo > Hydraulics in Environmental and Civil Engineering >]
Pirotton, Michel mailto [Université de Liège - ULiège > Département ArGEnCo > HECE (Hydraulics in Environnemental and Civil Engineering) >]
Archambeau, Pierre mailto [Université de Liège - ULiège > Département ArGEnCo > HECE (Hydraulics in Environnemental and Civil Engineering) >]
Aug-2014
Yes
International
5th International Junior Researcher and Engineer Workshop on Hydraulic Structures
du 28 aout 2014 au 30 aout 2014
Université de Lège
Spa
Belgium
[en] free surface ; spillway flow ; Laplace ; surface tracking ; boundary conditions ; curvilinear coordinates
[en] Flows over hydraulic structures, such as weirs or spillways, can be modelled using different techniques. New models such as SPH or PFEM are becoming more and more popular. These models are particle and/or meshless and consequently require a lot of computational power. Other methods such as VOF also require a lot of computational time. In the frame of 2-D vertical flows, other techniques use much less computation time. For irrotationnal flows, solving the Laplace equation can be done very efficiently. The difficulty of this method lies in the definition of boundary conditions. The free-surface, which is naturally determined when using Lagrangian methods, needs a heavy iterative solving due to its non-linear nature when expressed in the frame of the Laplace equation. This paper will present an original technique that allows a quicker and easier determination of the free-surface. An irregular mesh for boundaries is used and discussed. The method is validated with analytical solutions and experimental measurements.
Urban and Environmental Engineering
http://hdl.handle.net/2268/168673
http://popups.ulg.ac.be/IJREWHS2014/index.php?id=70

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