6533b7d0fe1ef96bd125a4bf
RESEARCH PRODUCT
Bank Erosion and Secondary Circulation in a Meandering Laboratory Flume
Donatella Terminisubject
Secondary circulationFlow (psychology)secondary motionOpen-channel flowmeander waveSettore ICAR/01 - IdraulicaFlumeOpen-channel flow meander wave secondary motion bank stabilityShear stressMeanderOpen-channel flowGeneral Materials ScienceCirculation (currency)Geotechnical engineeringGeologyBank erosionPhysics::Atmospheric and Oceanic Physicsbank stabilitydescription
Abstract This paper reports peculiar results of experimental investigation on the secondary circulation motion of flow along a meander wave. Experiments were conducted in a large amplitude meandering laboratory channel for two values of the width-to-depth ratio. Here attention is focalized on how secondary motion affects the bank shear stress distribution, influencing the stability of the outer bank. The analysis essentially highlights that, especially for small width-to-depth ratio, as the channel curvature increases, besides the classical central-region secondary circulation cell a counter-rotating circulation cell forms in the outer-bank region. Such counter-rotating circulation cell allows the bank shear stress to obtain small values at the outer bank.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2014-03-01 | Procedia - Social and Behavioral Sciences |