Abstract
This study is concerned with breach discharge due to dyke breach for complete and submerged outflows in straight and meandering channels. Such breach characteristics as flow direction of breach flows, effective width of breach section were examined experimentally. Breach discharge and inundation flows were predicted by the numerical model that solves simultaneously flood flows in a channel and inundation flows in a flood plain with the dynamic inundation model, which comprises the finite volume method on unstructured grid using FDS technique. It shows that the model is capable of predicting both the breach discharge and inundation flows for complete or submerged outflows with good accuracy.
