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Viatcheslav Anissimov August 31, 2000 05:30

Hi! I would like to know precisely what values CFX 4.3 stores in the variable YPLUS. In the manual I can read that YPLUS stores the YPLUS values at the walls. From the usual definition of dimensionless distance from the wall y+ at the wall mast be equal 0, so CFX stores in the variable YPLUS something else. I can suppose that it is dimensionless distance between the centre of the control volume immediately adjacent to the wall and the wall, but I would like to be sure that it is really so. Thanks in advance. Viatcheslav Anissimov.

S. Becker September 26, 2000 06:04

You are correct. The value USRDCC YPLUS is the dimensionless wall distance of the first node adjacent to the wall. If you want to retrieve more information write a fortran module e.g. in USRTRN to calculate this quantity for the entire flow field.

I hope it helps..


Viatcheslav Anissimov October 2, 2000 05:09

Thanks, Sasha.

Your answer was more clear and precise than answers of CFX Support Services.


S. Becker October 2, 2000 05:30

Dear Viatcheslav,

I had the same trouble with the CFX Support Services...

In the meantime we have established a small group working with CFX-4 and we are now using most of the user-subroutines for all pruposes except combustion. So we have acquire4d a lot of competence for that...


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