Berkeley Fluids Seminar
University of California, Berkeley
Bring your lunch and enjoy learning about fluids!
Wednesday, April 6, 2016
240, Bechtel Hall, 13:00-14:00
Dr. Charlie Hogg (Civil Engineering, Stanford University)
Lakes in the lab: filling basins fed by gravity currents
Abstract: Models of dense river flows into lakes typically model exchange between the river and lake waters as entrainment along the length of a gravity current and a single intrusion into the lake at the depth of neutral buoyancy. I will show laboratory experiments of basins fed by dense gravity currents that visualize clearly a different kind of exchange - a detrainment of fluid from the gravity current into the stratified ambient water simultaneously across a range of depths. Our work shows that the observed filling basin stratifications are better described by a simple model that includes this detrainment process than by a commonly used entrainment model for a gravity current filling a basin.