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please help me understand the output of wallShearStress

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Old   May 2, 2020, 13:55
Default please help me understand the output of wallShearStress
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Hello,

I'm very new to openfoam and developing some post-processing / sampling functionality for my cases.

Things are working out well, but I was wondering if you guys could help me understand the output of the wallShearStress function

currently, I am running it like:

Code:
postProcess -func "wallShearStress"
and it outputs something that looks like this:

Screenshot from 2020-05-02 13-50-32.png

granted the results aren't very interesting, I'm just trying to get the functionality down for when I need it.

Can someone help me understand what the actually output is, and units? Assuming Pa?

I tried to look in the documentation/api docs but I'm getting a 404 error on some webpages and can't seem to find the output description anywhere?

What exactly are these numbers ?

Also, if anyone can tell me how to only calculate wallShearStress on a specific patch, that'd be great...currently when I do something like:

Code:
postProcess -func "wallShearStress(name=bottom)"
it just says:

Code:
wallShearStress wallShearStress:
    processing all wall patches

at some point I will want to only sample a specific patch...how can I do this??

OFv1912

Thanks all.
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Old   May 4, 2020, 05:37
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Yann
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Hi !


Have a look at the documentation of the wallShearStress function : https://www.openfoam.com/documentati...earStress.html


Cheers,
Yann
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