CFD Online Discussion Forums (https://www.cfd-online.com/Forums/)
-   CFX (https://www.cfd-online.com/Forums/cfx/)
-   -   Inlet velocity expression (https://www.cfd-online.com/Forums/cfx/70583-inlet-velocity-expression.html)

 kingjewel1 November 28, 2009 14:52

Inlet velocity expression

Hey there,

I'm looking to implement a parabolic velocity profile at the inlet of a square duct in CEL. The expression is -2x^2+6x-4.
Could you help me out please with the dimensions ?

Best regards,

 ghorrocks November 28, 2009 18:45

You have not stated what the dimensions are - I will assume they are metres and m/s.

Then the CEL for your function will be
velocity = -2[m/s]*(x/1[m])^2+6[m/s]*(x/1[m])-4[m/s]

 kingjewel1 November 28, 2009 19:28

Quote:
 Originally Posted by ghorrocks (Post 238069) You have not stated what the dimensions are - I will assume they are metres and m/s. Then the CEL for your function will be velocity = -2[m/s]*(x/1[m])^2+6[m/s]*(x/1[m])-4[m/s]
Thanks Glenn, the dimensional analysis was getting me stuck. I can't find any CFX documentation to help with this. Any ideas?

Best regards,

 All times are GMT -4. The time now is 03:37.