Abstract:   The Glezer lab at Georgia Tech has found that vorticity produced by vibrated reeds can improve heat transfer in electronic hardware. Vortices enhance forced convection by boundary layer separation and thermal mixing in the bulk flow. In this work, we simulate the heat transfer process in a 3-dimensional plate-fin heat sink. We propose a simplified model by considering flow and temperature in a 2-D channel. We simulate periodically steady-state solutions. We classify several types of the vortex street and determine how the global Nusselt number is increased, depending on the vortices’ strengths and spacings, in the parameter space of Reynolds and Peclet numbers.

Speaker:  Xiaolin Wang
Institution:  University of Michigan

Date:  Wednesday, March 13, 2013
Location:  4088 East Hall (3:10 PM to 4:00 PM)