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http://dx.doi.org/10.14346/JKOSOS.2017.32.2.112

Influence of Input Parameters on Shock Wave Propagation in Quasi-3D Hydrodynamic Model  

Rhee, Dong Sop (River and Coastal Research Division, KICT)
Kim, Hyung-Jun (River and Coastal Research Division, KICT)
Song, Chang Geun (Department of Safety Engineering, Incheon National University)
Publication Information
Journal of the Korean Society of Safety / v.32, no.2, 2017 , pp. 112-116 More about this Journal
Abstract
Present study investigated the influence of time step size, turbulent eddy viscosity, and the number of layer on rapid and unsteady propagation of dam break flow. When the time step size had a value such that it resulted in Cr of 0.89, a significant numerical oscillation was observed in the vicinity of the wave front. Higher turbulent viscosity ensured smooth and mild slope of velocity and water stage compared with the flow behavior by no viscosity. The vertical velocity at the lower layer positioned near the bottom showed lower velocity compared with other layers.
Keywords
Quasi-3D hydrodynamic model; shock wave propagation; time step; turbulent eddy viscosity; the number of layer;
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