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Forum: OpenFOAM Running, Solving & CFD September 8, 2015, 04:51
Replies: 68
Views: 69,409
Posted By Blanco
OF doesn't find the transportProperties file...

OF doesn't find the transportProperties file inside the correct path. Check if it's there, OF needs to check what RANS model you are using and what are the nu or mu values.
Forum: OpenFOAM Running, Solving & CFD March 25, 2015, 10:59
Replies: 68
Views: 69,409
Posted By Blanco
Hi Xinguang, yes you can check at a wall...

Hi Xinguang,

yes you can check at a wall what is the y+ value "by hand", but I'm pretty sure you will find that OF is using the right formula. Check my post #37
...
Forum: OpenFOAM Running, Solving & CFD March 23, 2015, 02:43
Replies: 68
Views: 69,409
Posted By Blanco
Hi Xinguang, I don't have experience with...

Hi Xinguang,

I don't have experience with sonicFoam, but I think for sure you need to define mu and mut -> cinematic viscosity with varying density, laminar and turbulent, in order to perform...
Forum: OpenFOAM Running, Solving & CFD March 18, 2015, 10:48
Replies: 68
Views: 69,409
Posted By Blanco
yPlusRAS works both for HighRe and LowRe...

yPlusRAS works both for HighRe and LowRe turbulence models, the only difference is that it uses nut for incompressible flow while it uses mut for compressible flow.

There should be some other...
Forum: OpenFOAM Running, Solving & CFD February 5, 2015, 10:52
Replies: 68
Views: 69,409
Posted By Blanco
Well, in my understanding the yPlusRAS utility...

Well, in my understanding the yPlusRAS utility let you have the y+ or the y* depending on what is the boundary condition you are using on your wall.

I mean, if I use the nutLowReWallFunction then...
Forum: OpenFOAM Running, Solving & CFD February 1, 2015, 08:51
Replies: 68
Views: 69,409
Posted By Blanco
Yes you should set your first near wall cell...

Yes you should set your first near wall cell centroid position to be equal to the y coming from on line calculators. If you prefer to refer to first near wall cell height, you should set it to the...
Forum: OpenFOAM Running, Solving & CFD February 1, 2015, 04:52
Replies: 68
Views: 69,409
Posted By Blanco
I'll give my two cents on this problem. I...

I'll give my two cents on this problem.

I know this may looks like an obvious observation but...have you considered that "y" in the y+ formula is NOT the first near-wall cell height? It is the...
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