Dynamics of separated flow structure behind the semicylindrical rib in the channel at Re=798

Project: Visualization of Mechanical Processes

Journal: Visualization of Mechanical Processes: An International Online Journal

Article: VORTICAL STRUCTURE DYNAMICS OF SEPARATED CHANNEL FLOW BEHIND A SEMICYLINDRICAL RIB AT LATE STAGES OF LAMINAR-TURBULENT TRANSITION

Topics: Transition, Turbulence, Turbulence models, Visualization techniques

These videos show visualization of the flow structure evolution behind the semicylindrical rib in the channel at different stages of transition to turbulence. It is shown that starting from a certain Reynolds number, large-scale vortices are generated in the mixing layer behind the smoothly shaped rib. The main stages of the shear layer stability loss and vortex generation are observed.