複断面彎曲開水路流れの水理特性について (1)

Abstract

In a curved channel there are spiral motions occurred by centrifugal force. And in an openchannel that consists of a main channel and flood plains, the flow has a complex turbulent structurebecause of interaction between flow in a main channel and it in flood plains. So it is difficult to clarifycharacteristics of an open channel flow in bend with flood plains.In this paper it is the objective to elucidate the turbulent structure of this flow by measurementsof velocity and flow visualization. From experimental results it is comfirmed that three independentspiral motions exist in bend with two flood plains.