流線を活用した簡易平面二次元洪水流－河床変動解析法の開発
キーワード:
quasi-2D flow analysis,
2-D riverbed variation analysis,
stream line,
velocity distribution,
sediment transport
2016 年 22 巻 p. 121-126
詳細
2016 年 22 巻 p. 121-126
To develop an easy-to-use numerical model explaining flood flow, sediment transport and riverbed variation is important for efficient channel design and management. In this study, we developed a new easy two-dimensional method for the flood flow and riverbed variation analysis using stream line. We applied the new model and the conventional model to 2014 flood in the Nakagawa River whose data of water surface profiles were observed in detail. As a result, the authors’ model is capable of explaining water surface profile, velocity distribution and riverbed variation in the Nakagawa River.
