Turbulent and Coherent Convection

RTG workshop, May 27-29, 2015

224 Ingraham Hall, UW-Madison


Organizers: Leslie Smith, Fabian Waleffe


Have you ever heated water? seen a cloud? wondered where is that hot summer air?!?  Convection is the motion of air, water and other fluids induced by temperature differences. In nature, that fluid motion is typically very disordered -- turbulent convection. Those very complex turbulent convective flows are solutions of deceptively simple looking partial differential equations, namely the Navier-Stokes equations coupled to an advection-diffusion equation for the temperature, and those equations also have unstable coherent solutions that control the dynamics of turbulent flows. This workshop will provide an overview of some of the work that mathematicians, physicists and atmospheric scientists do to understand, predict and control convection. Some of the talks will present mathematical questions and results, others will present physical questions and experiments. Several of the talks will deal with the mathematical modeling of flows in the earth's atmosphere. Cool talks about hot stuff!


All talks will be in 224 Ingraham Hall 

Wed 5/27



8:45 AM Smith, Waleffe Welcome and introduction
9-10 AM Charles Doering     Wall to wall optimal transport
10-11 AM Greg Chini Structure and Stability of Exact Coherent States in Porous Medium Convection at Large Rayleigh Number
11-11:30 AM Coffee break
11:30 AM-12:30 PM Alexander Kiselev Small scale creation in fluids
12:30-2:00 PM Lunch break
2:00-3:00 PM Andre Souza Optimal thermal convection
3:00-4:00 PM David Goluskin   Windy convection

Thur 5/28



9-10 AM Mike Graham Drag reduction and the dynamics of turbulence in simple and complex fluids
10-11 AM

Srikanth Toppaladoddi

Optimizing heat transport in turbulent convection using wall roughness
11-11:30 AM Coffee break
11:30 AM-12:30 PM Jonathan Martin     The role of convection in shaping canonical structures in the mid-latitude atmosphere
12:30-2:00 PM Lunch break
2:00-3:00 PM Sam Stechmann Minimal models for precipitating turbulent convection
3:00-4:00 PM Scott Hottovy A Spatiotemporal Stochastic Model for Tropical Precipitation and Water Vapor Dynamics
Evening Conference Dinner Soga Chinese Restaurant, 508 State Street,  6-8 p.m. ($25/person)

Fri  5/29



9-10 AM Keith Julien Attacking low Rossby number convective flows via asymptotics, simulations, and experiments
10-11 AM Adolfo Ribeiro Numerical/Experimental Canonical Models of Geophysical and Astrophysical Flows
11-11:30 AM Coffee break
11:30 AM-12:30 PM Stephan Weiss   Turbulent thermal convection of a nematic liquid crystal
12:30-2:00 PM Lunch break
2:00-3:00 PM Jared Whitehead Infinite Prandtl number convection: the effect of varying boundary conditions on rigorous bounds of the heat transport
3:00-4:00 PM David Sondak Scaling laws in coherent Rayleigh-Bénard convection and the effect of Prandtl number