[Nek5000-users] Volume integral time derivative vorticity

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

You'll find the previous velocity in the vxlag array. Integration is easy, just multiply by bm1 and sum up. The tricky part might be to identify your sub-domain i.e. the elements.

-----Original message-----
> From:nek5000-users at lists.mcs.anl.gov <nek5000-users at lists.mcs.anl.gov>
> Sent: Tuesday 19th September 2017 18:46
> To: nek5000-users at lists.mcs.anl.gov	 <nek5000-users at lists.mcs.anl.gov>
> Subject: [Nek5000-users] Volume integral time derivative vorticity
> 
> I performed some simulations around a plunging flat plate.
> I have to compute the volume integral over a choosen domain (a rectangle around the body with a fixed geometrical dimension) of the eulerian time derivative of the vorticity field multiplied by the local position vector components. I found a subroutine to compute the vorticity. How should I compute vorticity at the previous timestep? And how can I perform the integrations? 
> 
> Thanks
> Mario
> 
> Mario Ostieri 
> 
> Ph.D. Student 
> University of Naples Federico II 
> Department of Industrial Engineering 
> Piazzale V. Tecchio 80 
> 80125 Napoli, Italy 
> tel. +390817682184 
> email: mario.ostieri at unina.it
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