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Transient wall shear not available in CFD Post

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Old   March 20, 2015, 14:26
Default Transient wall shear not available in CFD Post
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I took care to include Wall Shear as an extra variable to keep in Trn results, but when I tried to plot a contour at the transient time steps, nothing shows up (i.e. the wall is simply transparent). The same when I tried just the X,Y, or Z components. However, the contour does show when I choose the final time step. What is going on here? Thanks.
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Old   March 21, 2015, 13:05
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I hope this is a clue as to why the Wall Shear is not available in my transient results, although it hasn't helped me. I set a monitor point for various variables in a transient run and the Wall Shear ones are excluded. I suspect the Wall Shear requires a somewhat different treatment than do most variables because it exists only on the wall, but how? I have verified that my specified location is indeed on the wall.

Code:
Monitor Point: WSS

   Domain: Default Domain
   User specified location (r,t,a) :  2.574E-03,  5.236E-01,  2.100E-02
   User specified location (x,y,z) :  2.229E-03,  1.287E-03,  2.100E-02
 
 Excluded variables from output variable list:
                        Wall Shear X
                        Wall Shear Y
                        Wall Shear Z
 
   Valid variables from output variable list:
                        Velocity u
                        Velocity v
                        Velocity w
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Old   February 24, 2021, 02:43
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Hi,

I have the same problem. Do you know how to solve this problem?

Thanks in advance.

Regards,
Mehrdad
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Old   February 24, 2021, 03:45
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Sometimes its a bit tricky. I had a similar case once, where a derived variable didn't show, because another variabel was missing. You need the velocity gradient to calculate wall shear, so I suppose including it in trn files will enable Post to calculate wall shear.

Haven't used CFX in a while, so not sure if it can be included from the variable list.
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Old   February 24, 2021, 10:58
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Woud you mind showing the output control setup for the transient file you requested?
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