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.




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