[Nek5000-users] Calculation of sectional forces

[nek5000-users at lists.mcs.anl.gov]

Hi Sofia,

There is a routine that computes torque as well as all three
components of net force.

A few of the examples call this routine --- you should be
able to see this via:

cd
cd nek5_svn
cd examples
grep -i torq */*.usr

The main idea is to identify the surfaces that constitute
the object of interest, e.g., via the "set_obj" routine
shown in some of these examples.   Subsequent calls
to the torque_calc routine will compute the net forces
on these surfaces and sum them together.

Please let us know if this answers your question.

Best regards,

Paul


On Sat, 24 Nov 2012, nek5000-users at lists.mcs.anl.gov wrote:

> Dears Neks
>
> I am using the solver to perform 3D simulations past an oscillating cylinder.
>
> Do you know if there is a subroutine to calculate the sectional lift and drag 
> forces over the cross section of the cylinder in z-direction.
>
> Regards
> Sofia
>
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