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SUMMARY:On a slippery slope - Dr Maarten van Reeuwijk
DTSTART:20160226T130000Z
DTEND:20160226T140000Z
UID:TALK64838@talks.cam.ac.uk
CONTACT:Antoine Debugne
DESCRIPTION:In this seminar I will discuss some recent results from Direct
  Numerical Simulation of a gravity current. Of particularly interest is th
 e relation between entrainment into the current and the turbulence in its 
 interior. Making use of recent progress in the understanding of entrainmen
 t in turbulent plumes and jets (JFM 782 pp. 333-355)\, we decompose the en
 trainment into contributions due to turbulence production\, buoyancy\, and
  boundary effects. We show that boundary effects are small for the problem
  under consideration and restrict attention to an idealised case with free
 -slip boundary conditions. We explore the parameter space by varying the s
 lope angle and study the stratified turbulence in the interior and paramet
 erise the eddy viscosity and dissipation rate.
LOCATION:LR3B\, Inglis Building\, CUED.
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