16mm 撮影による掃流砂運動の特性量解析と流砂の平衡状態について

Abstract

It is impossible to systematize the studies on bed load transport process without any descriptionof the behavior of individual particles of the system. In this study, as the first step to establish amodel of bed load transport, the characteristics of the motion of bed load particles were inspectedfor both fixed bed and alluvial bed. In the former part, the resisting moment of fluid for a rotatingparticle and the frictional process on a rough bed were interesting problems to be analysed. Andthe latter part, the behaviors of the sand particles in an alluvial bed were carefully inspected usinga 16 mm movie camera and some instructive results were obtained.