[Nek5000-users] How to add Coriolis force

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

vx is the solution array, see the include file trunk/nek/SOLN whereas ux is
just a real number which is filled with the velocity at the current
evaluation point. So you should use ux in userf.

Best
praveen


On Sat, May 31, 2014 at 3:47 PM, <nek5000-users at lists.mcs.anl.gov> wrote:

> Hi,Mike:
>     Is there any difference by using ux and vx? As in the help, most
> frequently used is vx. However, when I use vx in the formulation, the
> compile turn out error.
>
> Xianbei
>
>
>
>
>
> At 2014-05-29 09:09:16, nek5000-users at lists.mcs.anl.gov wrote:
>
> Hi,Mike
>    Thank you very much for you help. Now I have a question about the
> built-in variables. As the help document is not so sufficient, there are so
> many variables not introduced, so how can I find what's the meaning of the
> variables? I'm sorry to trouble you for this simple question, but it's
> really important to me.
>
> Thank you
> Xianbei
>
>
>
>
>
>
> 在 2014-05-28 11:53:58，nek5000-users at lists.mcs.anl.gov 写道：
> >Xianbel,
> >
> >You can add the Coriolis term in the userf routine:
> >
> >      omega = something
> >
> >c add coriolis forces
> >      ffx = + 2.0*omega*uy
> >      ffy = - 2.0*omega*ux
> >      ffz = 0.
> >
> >Mike
> >
> >
> >On May 27, 2014, at 8:45 PM, <nek5000-users at lists.mcs.anl.gov<mailto:nek5000-users at lists.mcs.anl.gov>> <nek5000-users at lists.mcs.anl.gov<mailto:nek5000-users at lists.mcs.anl.gov>> wrote:
> >
> >Dear Neks;
> >        I want to add Coriolis force to do a rotating simulation. As known, the Coriolis term is defined as 2*omega(cross product)U, so how can I add it to the N-S equation? Is there any example of similar case?
> >
> >Thank you
> >Xianbei
> >
> >
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