Calculating forces/moments

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thschrader
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Location: Germany

Calculating forces/moments

Post by thschrader »

With the reporting function openfoam calculates the resulting wind-forces/moments of the
structure at the origin (X). My goal is to put the complete 30-m lattice tower in my cfd-channel,
without the foundation of course.
At the moment I am running a test case with an other 30-m mast which is easier to mesh.

For the statics calculation I need the resulting forces/moments at the point 1-4 too (the connections).
For instance for calculating the forces/moment at point 3 only structure above point 3 can be used.
How can I do that? Editing the controlDict?
mast_lattice.JPG
mast_lattice.JPG (27.4 KiB) Viewed 702 times
test_mast.JPG
test_mast.JPG (20.38 KiB) Viewed 702 times
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oliveroxtoby
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Joined: Fri Dec 23, 2016 9:43 am
Location: South Africa

Re: Calculating forces/moments

Post by oliveroxtoby »

thschrader wrote: Sat May 06, 2023 10:36 am For the statics calculation I need the resulting forces/moments at the point 1-4 too (the connections).
For instance for calculating the forces/moment at point 3 only structure above point 3 can be used.
How can I do that? Editing the controlDict?

mast_lattice.JPG
test_mast.JPG
You could put them in separate patches or, if the sections are all of equal length, you could use the 'spatial data binning' feature in the forces reporting function to separate the output into sections in the z direction.
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