yPlusRAS utility - value for wall distance
 

Dear Foamers,

I don't understand the value of the wall distance y that belongs to y+.

For example:
canal height h=0,2m
number of cells = 100, no grading --> cell height = 0,002m
I've assumed that yPlusRAS computes the y+ value of the first cell (center, closest to the wall) of the flow region.
Why is the appropriate wall distance 0 instead of 0,001m?

Thank's in advance for each response!
Ayla

no idea, aylalisa, but this might give you some clues