> Faculty of Engineering > Department of Mechanical Engineering

LIF flow visualization of a cross flow plane (Y-Z plane) downstream of a square cylinder (at X = 2D), demonstrating the out-of-phase relation between the top and bottom row streamwise vortices in the mode A regime (Re = 175). Approximately half a cycle of vortex shedding is covered from top to bottom.

Primary vortex

1D

1D

1D

1D

5D

5D

5D

5D

Core of secondary vortex

Primary vortex

Trace of secondary vortex

LIF flow visualization of a cross flow plane (Y-Z plane) downstream of a square cylinder (at X = 2D), demonstrating the in-phase relation between the top and bottom streamwise vortices in the mode B regime (Re = 235). Approximately half a cycle of vortex shedding is covered from top to bottom.