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-   -   Who stole my YPlus! (http://www.cfd-online.com/Forums/cfx/24729-who-stole-my-yplus.html)

Usman October 25, 2007 13:20

Who stole my YPlus!
 
I am simulating a flow over an airfoil. I want to plot a YPlus plot to check the density of my mesh. But guess what i do not find YPlus variable in the list provided by CFX. What is going on here??

Glenn Horrocks October 25, 2007 18:28

Re: Who stole my YPlus!
 
Hi,

You have to click the "..." button to access the less often used variables.

Glenn Horrocks

Usman October 25, 2007 19:01

Re: Who stole my YPlus!
 
Thanks for your answer Glenn. I have clicked the specified button but YPlus variable is not there. Is there some kind of bug around that is affecting CFX?

Sans October 26, 2007 02:20

Re: Who stole my YPlus!
 
I noticed a similar behavior some time back when I used a Free Slip wall (by mistake) everwhr apart from my inlet and outlet surfaces. I expected the variable to be listed, but couldnt find it.


Terje October 26, 2007 03:31

Re: Who stole my YPlus!
 
Hi,

In CFX-pre > Output Control you can choose which variables that are to be stored from the simulation. Have you included y+ there?

- Terje

Usman October 26, 2007 08:29

Re: Who stole my YPlus!
 
I have also selected "free slip" surface for my airfoil. Probably this is the reason why YPlus is not appearing in the list. I real life when fluid flows over the surface, closest particles to the surface come to halt which is known as "no slip" condition. Therefore i should have selected no slip surface in the first place. Thanks for help guys!

Regards Usman

Usman October 26, 2007 08:33

Re: Who stole my YPlus!
 
I could even have done what Terje has suggested, so it was not such a big problem after all!! Thanks for your interest Terje.

Regards Usman


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