Numerical Simulation of Impulsive Water Waves Generated by Subaerial and Submerged Landslides Incidents in Dam Reservoirs
Abstract: The water wave
generation by a freely falling rigid body is examined in this paper. Landslides
on the margins of dam reservoirs may generate large waves that can produce
flooding over the banks or overtopping the dam crest. In the present
investigation, landslide generated waves are studied using a numerical model
based on Navier-Stokes equations. Impulse wave amplitude, period, energy is
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 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. Numerical solutions for the velocity
fields, pressure distributions, and turbulence intensities in the vicinity of the
falling rigid body are also presented. Results show that the general pattern of
wave in all cases is the same but the amplitude and period are different. Data
analysis shows that the maximum wave crest amplitude in subaerial induced waves
is strongly affected by bed slope angle, landslide impact velocity, thickness,
kinematics and deformation and by landslide shape.
Author: Vafa Khoolosi, Sedat
Kabdaşli
Journal Code: jptsipilgg160055
Artikel Terkait :
Jp Teknik Sipil gg 2016
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