抄録
Detailed profiles of three-dimensional flow structures and bed-forms using a new ADCP (Acoustic Doppler Current Profiler) method was developed for flow attacking on a revetment in the full scale experiment in the Jyoganji River. In the present method, individual beam data for current profiling is managed for velocity and bed profiles. This paper supplies detailed data of velocity distributions and bed forms by the field experiment. And, we proposed a numerical analysis method for the local three-dimensional flow structure around the revetment using bottom velocity computation method based on a depth integrated model. We demonstrated the accuracy of the analytical method through the comparison with velocity distributions measured by the experiment. Furthermore, the results demonstrated that combined use of the new measuring and calculating method was reliable to understand three-dimensional flow structures in flow attacking zones with steep velocity gradients and local scouring around revetments.
