Simulation of dam-break flow in channel expansion with coupled 2-D/3-D SPH model
Džebo, Elvira (Author), Žagar, Dušan (Author), Četina, Matjaž (Author), Petkovšek, Gregor (Author)

URLURL - Presentation file, Visit http://drugg.fgg.uni-lj.si/4063/ This link opens in a new window

The paper presents the simulation of a dam-break flow in a channel expansion with a coupled 2-D/3-D SPH mathematical model Tis Isat. The model was calibrated and validated against the experiments of Martin and Moyce [1]. Overall agreement between the Tis Isat model and other available models was good while local behaviour at the solid boundaries was better [2]. The noveltyof the presented approach is in the application of a coupled 2-D/3-D SPH model. The proposed method is applicable to systems where the flow transits from 2-D to 3-D state. The proposed approach significantly shortens the computational time of the SPH simulations, while the precision of results is still satisfactory. A laboratory experiment of the wave after instantaneouscollapse of a dam [3] was used for calibration. The downstream channel slope was 0.087% and the channel width expanded instantaneously from 0.4 m to 1.2 m. The results of the coupled 2- D/3-D mathematical model Tis Isat were compared to measurements on this physical model, results of a 1-D finite difference model and results of the fully 3-D mathematical model Tis Isat. The overall agreement of the results was at least as good as achieved with other models.

Keywords:SPH, dam break, coupled 2-D/3-D model
Tipology:1.08 - Published Scientific Conference Contribution
Organization:FGG - Faculty of Civil and Geodetic Engineering
Number of pages:Str. 403-408
COBISS.SI-ID:5860705 Link is opened in a new window
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Record is a part of a monograph

Title:7th International SPHERIC Workshop Proceedings : Prato, Italy, 29-30 May 2012
COBISS.SI-ID:5860449 This link opens in a new window
Place of publishing:Prato

Secondary language

Keywords:SPH, porušitev pregrade, povezan 2-D/3-D SPH model

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