laminar simulation
 

Hi to all

I have a question: it's mistaken to carry out a laminar simulation with a value of Reynolds number of about 2000000?

Thanks

Re: laminar simulation
 

Hey Man: What's your problem. May be in flat plate yuo can do it but in pipe you can't. Because your problem become turbulent. Best Regards, Farid,

Re: laminar simulation
 

It depends on your problem. For example, if it is pipe flow (with a sharp-edged entrance), the laminar-turbulent transition takes place at approx. Re(-based on diameter of pipe) of 2300(Lower limit), and for a flat plate, Re(-based on distance from the leading edge) is around 3.2x10^5(lower limit)for transition.

Regards,

Rajesh

Re: laminar simulation
 

If your problem regards the flow on a cylinder you can find useful to read this tutorial:

http://www.fluent.com/software/stude...l_cylinder.htm

However if your flow has a Re of around 2000000 you have to use a turbulent approach. Regards Emanuele