[Nek5000-users] Time derivative of Scalar field

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

Thanks Ketan and Paul.

Saikat

Saikat Mukherjee,
PhD Student,
Paul Research Group - http://www.me.vt.edu/mpaul/
Engineering Science and Mechanics,
Virginia Tech.

On Tue, Apr 25, 2017 at 6:42 PM, <nek5000-users at lists.mcs.anl.gov> wrote:

>
> Thanks Ketan.
>
> Saikat,
>
> You may also be able to just use the values in vxlag() and thus avoid the
> need
> for extra storage.
>
> A simple test would verify..   Of course, it's not that expensive to just
> store your
> own copies for purposes of your own analysis.
>
> Paul
>
> ------------------------------
> *From:* nek5000-users-bounces at lists.mcs.anl.gov [
> nek5000-users-bounces at lists.mcs.anl.gov] on behalf of
> nek5000-users at lists.mcs.anl.gov [nek5000-users at lists.mcs.anl.gov]
> *Sent:* Tuesday, April 25, 2017 1:06 PM
> *To:* nek5000-users at lists.mcs.anl.gov
> *Subject:* Re: [Nek5000-users] Time derivative of Scalar field
>
> Hi Saikat,
>
> I have attached a usr file that shows how to calculate finite difference
> based first derivative of the first passive scalar t(1,1,1,1,2) using the
> current time step and two previous time steps. The coefficients for the
> derivative are obtained using a call to fd_weights_full, and I am using a
> common block for storing the values of the scalar at two previous
> time-steps.
>
> Ketan
>
>
>
>
>
>
>
>
>
> _______________________________________________
> Nek5000-users mailing list
> Nek5000-users at lists.mcs.anl.gov
> https://lists.mcs.anl.gov/mailman/listinfo/nek5000-users
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.mcs.anl.gov/pipermail/nek5000-users/attachments/20170425/dc0a0821/attachment.html>