Hi all, I am calculating natural convection. vmag is very low and therefore my y+ values are between 1 and 10. Because of a very complex geometry and many many cells which I already have I don't want to use a Low Re turbulence model. What's happening with the heat transfer if i have to low y+? Has anybody experience with the subroutine modswf.f? When using modswf.f is there also a y+ criterion?

Ever thought of your problem being laminar ???