Author(s): Tawatchai Tingsanchali; Winyu Rattanapitikon
Linked Author(s): Tawatchai Tingsanchali
Keywords: No Keywords
Abstract: A 2-D depth-averaged hydrodynamic model is developed to simulate the propagation of dam break wave over a dry flood plain under supercritical and subcritical flow conditions. The numerical computation is carried out using a two-step predictor-corrector asymmetric finite difference scheme for supercritical flows and a one step asymmetric finite difference scheme for subcritical flows. The model is applied to simulate the propagation of the dam break wave front, its spreading pattern and the depth hydrograph in the flood plain considering different flood plain slopes and reservoir heads. The computed results are compared with the results from the experiments carried in this study. The agreement is found to be satisfactory. Sensitivity analysis is carried out to determine the individual effects of Manning n, the required minimum depths for energy loss calculation and for positioning of wave front.
Year: 1993