[FLASH-USERS] External forcing

[andrea costa]

Dear Christoph,

thanks, it will help us a lot!
I will let you know if We have new difficulties
andrea


2014-04-29 14:39 GMT-03:00 Christoph Federrath <
christoph.federrath at monash.edu>:

>
> Dear Andrea, Norbert, Bob,
>
> the most recent version of the stirring module includes a proper
> decomposition into solenoidal and compressible modes and is available in
> the current FLASH release. See the User Guide, Sections "16.3.2 Stir Unit:
> FromFile Implementation", Section "16.3.3 Using the StirFromFile Unit", and
> Section 16.3.4 Stirring Unit Test:
> http://flash.uchicago.edu/site/flashcode/user_support/flash4_ug_4p2.pdf
>
> The relevant paper for this driving module is:
> http://adsabs.harvard.edu/abs/2010A%26A...512A..81F
>
> Please let me know if you have any questions about this implementation.
>
> Kind regards,
>
> Christoph
>
>
> ________________________________
> Dr. Christoph Federrath
> Monash Centre for Astrophysics,
> School of Mathematical Sciences,
> Monash University,
> Clayton, VIC 3800, Australia
> +61 3 9905 9760
> http://www.ita.uni-heidelberg.de/~chfeder/index.shtml?lang=en
>
>
> Am 29.04.2014 um 08:31 schrieb Robert Fisher:
>
> > Dear Andrea, Norbert :
> >
> >   StirTurb does stochastic driving, including the forcing contribution
> in an operator-split fashion to both the momentum and energy equations for
> long-wavelength, low-wavenumber waveband. Please see this paper for a more
> in-depth description:
> >
> > http://iopscience.iop.org/1402-4896/2008/T132/014046/
> >
> > This approach may be modified substantially to handle a forcing function
> with arbitrary space and time dependence. Please feel free to contact me
> for more information.
> >
> >   Best wishes,
> >
> >   Bob
> >
> >
> > On Tue, Apr 29, 2014 at 11:24 AM, Norbert Flocke <
> flocke at flash.uchicago.edu> wrote:
> > Hi Andrea,
> >
> > I am not an expert in this, but I recall something similar is done in
> the Stir Unit. Please have a look at the FLASH User's guide under section
> 16.3. I think an external force is introduced into the MHD to simulate
> stirring.
> >
> > Hope this helps,
> > Norbert
> >
> >
> >
> > On Tue, 29 Apr 2014, andrea costa wrote:
> >
> > Dear all,
> >
> > we need to add an external forcing in an MHD simulation.
> > The external force must be space and time dependent
> > Can someone  tell me how to implement this problem
> > thanks in advance
> > andrea
> >
> > --
> > Dr. Robert Fisher
> > Assistant Professor
> > University of Massachusetts/Dartmouth
> > Department of Physics
> > 285 Old Westport Road
> > North Dartmouth, Massachusetts 02747
> > robert.fisher at umassd.edu
> > http://www.novastella.org
>
>
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