抄録
An estimation method for discharge hydrograph in rectangular channel was examined. The method, which was based on one-dimensional shallow water equations and characteristics curves equations, used the time variation of water surface profile and roughness coefficient on the boundary as input conditions of analysis and estimated the roughness coefficient. The method was verified against numerical results on uniform, non-uniform flow and experimental data on non-uniform and unsteady flows. It shows that proposed method can predict the discharge hydrograph with reasonable accuracy, and it is necessary for the method to improve in a prediction of the roughness coefficient.
