[Sufyan]

HI

I want to simulate vortex shedding downstream 2D circular cylinder with 200 Reynolds number, my mesh is correct.

i want to know the best turbulence model to get accurate and better results, i have simulated first using laminar model and got VS

I am asked to do this using some turbulent model

k-epsilon
k-omega or any one else


suggest me please with reason


Thanks in advance

[ogloth]

Re 200 is laminar!

[FMDenaro]

Originally Posted by ogloth

Re 200 is laminar!

Indeed, is a flow condition very easy to solve for all the flow scales, no turbulence model is necessary, only a good mesh

[Sufyan]

Originally Posted by FMDenaro

Indeed, is a flow condition very easy to solve for all the flow scales, no turbulence model is necessary, only a good mesh

thank you , can i do my research work on the basis of laminar model for a publication
second is someone told me that laminar model is ideal model , and if i want to simaulate transient flow in fluent i have to use any other model ,


is it right?


thanks

[FMDenaro]

Originally Posted by Sufyan

thank you , can i do my research work on the basis of laminar model for a publication
second is someone told me that laminar model is ideal model , and if i want to simaulate transient flow in fluent i have to use any other model ,


is it right?


thanks

what "ideal model" stands for you?

[Sufyan]

Originally Posted by FMDenaro

what "ideal model" stands for you?

he(a senior student) told me laminar model is not suitable , ideal doesnt means best for my case , ideal in sanse like carnot cycle which is ideal but do not exist,

means i can not present results based on laminar model ..

[agd]

Your friend is wrong. Laminar flow is quite real and at a Re=200 the flow around a cylinder is laminar, even in the real world.

[Far]

I did it again recently. Do you need all files? See this thread, you will very useful info here http://www.cfd-online.com/Forums/ans...cylinders.html