Hi there,

I am conducting some investigations for the vortex shedding behind blunt objects. I observed consistently that it might more physically sound if the Reynolds and Strouhal numbers are based on the vorticity rather than the conventional free stream velocity. I am wondering if anybody out there is aware of any people/paper that might support this idea?

Thanks in advance.

Tony

Yes you are right. St and Re numbers are better parameters. My master thesis dealt with vortex shedding in counterflowing jets and I have used the LES model.

Cheers.

Davide

Thanks.

Actually, I have just found my answer. The idea I proposed is consistent with the free-stream concept of Roshko A (1955) for the universal scaling of Karman-type vortex shedding.