2019 Volume 25 Pages 243-248
A model to predict in the Naka River downstream of Nagayasu-Guchi Dam is required for elucidating of sediment transport with replenished sediment. The authors present the simple two-dimensional analysis method which contains the suspended load model and tributary model to predict in a long-distance of the Naka River. This model was validated by using the 2014 flood data and compared with results of the two-dimensional analysis method. This paper shows that this model has the same ability compared with the two-dimensional analysis method on the estimation of the water surface profile, velocity vectors, and sediment transport. Moreover, it was revealed that this model can analyze in one-eighth of the time required with the two-dimensional analysis method.
