Unsteady-Flow Velocity Variations in and near An Embayment

Abstract

All the three velocity components in unsteady flow inside and near an embayment, which was made on the flood plain of a compound channel, have been measured with electromagnetic probes. Unsteady flows were simulated by three hydrographs in a 25m long, lm wide tilting flume. Shown here are the temporal variations of the depths, as well as the longitudinal velocity component's variations with time and water height. The circulating flow's evolution with time during a hydrograph is clearly demonstrated by the experimental results.