Axially Homogeneous Convective Turbulence in a Long Vertical Tube
Jaywant H. Arakeri, professor in the Department of Mechanical Engineering in the Institute of Science in Bangalore, India, will discuss a relatively new and unexplored type of turbulent flow created by an unstable density difference created across the ends of long vertical tube.
This flow may be considered to be a free convection analog of pressure driven pipe flow. Both are axially homogeneous, one is driven by a linear density gradient and the other by a linear pressure gradient. This flow has many interesting features: the mean velocities, and the mean Reynolds shear stresses are zero; thus the turbulent production due to shear is zero and is solely due to buoyancy. Near the tube walls, we have shear free turbulence, which does not decay with time.
Friday, May 19 at 11:00 am
Fisher Hall, 101
1400 Townsend Drive, Houghton, MI 49931