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You are here : eLibrary : IAHR World Congress Proceedings : 34th Congress - Brisbane (2011) : THEME 7: Hydroinformatics : Comparison of two types of roughness model for a dam break simulation using sph
Comparison of two types of roughness model for a dam break simulation using sph
Author : D. Žagar, E. Džebo, M. Jeromel, M. Četina and G. Petkovšek
The paper presents a study of a failure of a dam located at Kolarjev vrh, Slovenia. In case of such an event, water would rush with very high velocity through a steep valley with 10-30% slope to the plain 700 m below. The surge front and free surface in such conditions are difficult to simulate with conventional numerical schemes. The meshless Smoothed Particle Hydrodynamics (SPH) method provides a good alternative. However, the treatment of boundaries is not straightforward in SPH, and friction plays a significant role in the analysed case. Žagar et al. (2009) modelled the roughness by adding random elevation differences to the surface geometry. In this study, a variable roughness parameter was introduced to the SPH model instead. Both solutions showed good results with slight variances. A comparison between the two approaches is presented, as well as a comparison to a curvilinear finite volume model and measurements on a physical model.
File Size : 535,349 bytes
File Type : Adobe Acrobat Document
Chapter : IAHR World Congress Proceedings
Category : 34th Congress - Brisbane (2011)
Article : THEME 7: Hydroinformatics
Date Published : 01/07/2011
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