SYSTEMATIC DATA ANALYSIS ON OSCILLATORY SHEET FLOW IN LIGHT OF SEDIMENT PARTICLE PROPERTIES

Abstract

Oscillatory sheet flow is the sediment transport mode under stormy wave condition, so that a large wave flume almost comparable to the real sea condition is required for the reproduction. As an alternative, light and large artificial particles have been used in a relatively small flumes. However, the systematic differences can be found between data using natural sands and those using artificial particles. This study investigates the effects of particle properties on the sheet flow dynamics and discusses the validity of using the artificial particles. Systematic data analyses have been performed focusing on the concentration profile, velocity profile, transport flux and transport layer thickness.