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.
Acknowledgments
Prof. Graham Fleming (Vice Chancellor for Research, UC Berkeley)
Prof. Eliot Quataert on behalf of The Theoretical Astrophysics Center and the Astronomy Department (UC Berkeley)
Prof. Philip S. Marcus on behalf of the Mechanical Engineering Department (UC Berkeley)
Prof. Michael Manga (Earth and Planetary Science, UC Berkeley)
Prof. Evan Variano (Civil and Environmental Engineering, UC Berkeley)