Tsunami-Induced Bores Propagating over a Canal, Part II: Numerical Experiments Using the Standard k-ε Turbulence Model

This companion paper presents the results of a series numerical experiments examining effects mitigation canal on hydrodynamics tsunami-like turbulent bore proceeding over horizontal bed. The hydraulic bores were generated by dam-break setup which employed impoundment depths do = 0.20 m, 0.30 and 0.40 m. propagated downstream impoundments in flume interacted with varying geometry located downstream. then left through drain further canal. In this study, effect depth specific momentum energy passing rectangular is numerically studied. width was kept constant, at w 0.6 while varied as follows: d 0.05 0.10 0.15 time history mean flow during bore’s indicates that jet stream maximum controlled depth. required to dissipate vorticity, kinetic energy, dissipation rate all increased decreased. orientation also investigated, it found impulsive reached highest values for orientations 45 60 degrees. For same depth, peak occurred degree (θ 60°).