Author(s): Tsuyoshi Arimitsu; Kazuya Ooe; Takashi Deguchi; Ichiro Fujita; Yoichi Moriyama
Linked Author(s): Ichiro FUJITA
Keywords: No Keywords
Abstract: Accurate estimation of sediment inflow to reservoir is extremely significant for an efficient dam management. Although behavior of eroded sediment has to be investigated for a proper dam management, detailed information is not available at present. In this study, hydraulic experiments regarding bank erosion for a steep slope curved channel were conducted. And a numerical model based on the unstructured grid system was developed to simulate the bank erosion processes. It was noted that, even for an upper regime flow condition, the general feature of local bed variation is similar to the results for lower regime flow obtained by other researchers. It was also found that the experimental results can be simulated fairly well by the numerical model using appropriated submerge angle of repose of sand and the critical tractive stress at the trapezoidal slope.
Year: 2009