Calculating Y+ & understanding the Snappyhexmesh log file
 

I'm trying to work out the Y+ values I'm getting from created meshes.
Looking at the log file I see:


patch faces layers overall thickness
...................[m].....[%]
----- ----- ------ --- ---
Wing 1936859 0.883 0.000926 79.4


I'm guessing the 0.000926m value is the final layer thickness?
What does the 79.4% mean?

Are the contents of the log file documented somewhere?
I've been unable to find it, if it is a link in that direction would be great.

Thansks.

Hi Doug68,

Did you find an answer to your issue?

No I did not find a decent answer, frankly I think the documentation of OF is not that good there's a few things I've just come to a dead end on trying to work out.

As for Y+ there's a post processing function "yPlus" that'll create data you can use in paraFoam. I'm not sure if this is actually creating Y+ or Y*.
Looking at the data and doing the math by hand to calculate Y+ some of the figures it presents look suspiciously small, so I'm not that confident in that either.

I have not seen a better way than doing the math by hand for Y+ for the moment... At least we will be sure of what we have and no need to dig into OF documentation