How do I display vortex shedding ?
 

Hello, I am working on a fluid dynamics project which deals with the interaction of flow and twin cylinder pairs. I want to use Fluent to help me visualise the flow patterns of the flow. However I have difficulties displaying the vortex shedding of the flow around the cylinders. Is there any parameters that I've left out? Will be grateful for any help in this matter. Thanks in advance! btw I'm using Fluent 6.3