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Modeling and Comparison of Water Waves Caused by Landslides into Reservoirs
Landslides on the margins of dam reservoirs may generate large waves that can produce flooding over the banks or overtopping the dam crest. Therefore, the study of slope failures and the subsequent generation of water waves are of paramount importance for dam safety. In the present investigation, a boundary element model of a subaerial and submerge landslide is developed. Landslide generated waves are studied using a numerical model based on Navier-Stokes equations, with a VOF (volume of fluid) algorithm to track the interfaces. With this approach, the interaction between slide and water is implicitly solved. Validation is carried out by comparison between the computed prediction and experimental data of water waves generated by rigid body and by a deformable granular mass sliding into water, with the purpose of improving predictive simulations of landslide. The effects of bed slope angle, initial submergence, slide geometry, shape and deformation on impulse wave characteristics have been inspected. Impulse wave amplitude, period, energy are studied in this work. The effects of bed slope angle on energy conversion from slide into wave are also investigated, and the numerical model we will used in this study is the full three dimensional commercial code FLOW-3D. Results of the Navier-Stokes model show that waves generated are highly dependent upon the details of slide mechanism and kinematics. The calculated results show that the simulations agree well with experimental observation illustrating the potential of the proposed scheme.
Modeling and Comparison of Water Waves Caused by Landslides into Reservoirs
Landslides on the margins of dam reservoirs may generate large waves that can produce flooding over the banks or overtopping the dam crest. Therefore, the study of slope failures and the subsequent generation of water waves are of paramount importance for dam safety. In the present investigation, a boundary element model of a subaerial and submerge landslide is developed. Landslide generated waves are studied using a numerical model based on Navier-Stokes equations, with a VOF (volume of fluid) algorithm to track the interfaces. With this approach, the interaction between slide and water is implicitly solved. Validation is carried out by comparison between the computed prediction and experimental data of water waves generated by rigid body and by a deformable granular mass sliding into water, with the purpose of improving predictive simulations of landslide. The effects of bed slope angle, initial submergence, slide geometry, shape and deformation on impulse wave characteristics have been inspected. Impulse wave amplitude, period, energy are studied in this work. The effects of bed slope angle on energy conversion from slide into wave are also investigated, and the numerical model we will used in this study is the full three dimensional commercial code FLOW-3D. Results of the Navier-Stokes model show that waves generated are highly dependent upon the details of slide mechanism and kinematics. The calculated results show that the simulations agree well with experimental observation illustrating the potential of the proposed scheme.
Modeling and Comparison of Water Waves Caused by Landslides into Reservoirs
Khoolosi, Vafa (author) / Kabdaşli, Sedat (author) / Farrokhpour, Sevda (author)
Watershed Management Symposium 2015 ; 2015 ; Reston, VA
Watershed Management 2015 ; 72-78
2015-07-29
Conference paper
Electronic Resource
English
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