Low Re turbulent model
 

Hi all,

I'm working on a low Re (~220000), low AR (~1.5-2) MAV model, and I'm now confused with which turbulent model to use.

I realise that if I want to use k-epsilon and k-omega, I will need Y+ to be about 30, while if I use k-omega with the transitional flows option enabled, I will need Y+=1. So I want to decide which is a better model for my case before generating the grid.

Could anyone give me a hint and recommend a good book on this? There are also some variants of both models, please could someone explain their differences (or are they just much the same)?

xxxx

Refer to the UG... in Fluent use TUI (text user interface) from there you can find more turbulent models....

I acutally read the UG before I post the question: Nothing much says about which model is better for low Re. The only reference to Re is that k-omega can be used for both high and low Re situations.