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Wenqing Zhang July 21, 2004 10:09

impingement information
Dear all,

In particle tracking simulation, is it possible to obtain the particle impingement information at wall, such as particle incident angle, particle velocity et al.?

I need the information because I have to impose at the wall a restitution coefficient which is a function of the incident angle. I am currently using CFX 5.7.

Many thanks.


Robin July 21, 2004 10:24

Re: impingement information
Hi Wenquing,

The variable you want is particle impact angle. See $CFXROOT/etc/VARIABLES for a list of solver variables.

Regards, Robin

Wenqing Zhang July 21, 2004 10:41

Thanks very much. The info you provided is really helpful.


Wenqing Zhang July 21, 2004 11:25

Re: impingement information
Hi, Robin,

I just noticed that particle impact angle is only available in PTM_UR, but not in CEL. Does this mean I can only use the variable in user fortran subroutine?

Thanks again.


Robin July 26, 2004 11:52

Re: impingement information
Hi Wenqing,

Yes, currently particle tracking customization must be done through particle user routines.

Regards, Robin

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