[Dune] publications about Dune parallel scalability and performance

[Ziad Boutanios]

Thanks. I'm planning to start with a DG Navier-Stokes solver and see 
where that goes. Two weeks should indeed be enough. BTW does libdune 
support vectorization and hybrid meshes (e.g. pyramids and tetras)?

On 2020-01-07 5:34 p.m., Christoph Grüninger wrote:
> Hi Ziad,
> I don't think you will find ready-to-use codes for your problem at hand
> in the Dune world. But with Dune-FEM (or AcFEM) or Dune-PDELab you
> should be able to set up your discretization within a couple of weeks.
> Then you can test the actual performance.
>
> Bye
> Christoph
>
> Am 30.12.19 um 16:27 schrieb Ziad Boutanios:
>> Hi Christoph,
>>
>> I have an extensive background in multiphase flows using both FEM and
>> FVM. My interest in DG for incompressible multiphase simulations stems
>> from the suitability of the method for hyperbolic problems. It is also
>> quite good for volume fraction transport equations where the volume
>> fraction needs to be bounded between 0 and 1.
>>
>> I recently wrote a CG/DG code for a Eulerian-Eulerian formulation using
>> UFL with good results but it is very slow compared to FVM. Such a code
>> can be used for aero-icing, sediment transport, drifting snow,
>> particulate flow through porous media, etc. Right now I am looking to
>> modify the equations and make the code faster, maybe use DG for all
>> equations if it helps parallel runs.
>>
>> My interest in Dune is due to improved mesh handling and availability of
>> automatic mesh adaptation. This is a research project I'm doing
>> part-time for lack of funding but I am open to collaborations if someone
>> has a common interest and could get involved full-time.
>>
>> Kind regards,
>>
>> Ziad
>>
>> On 2019-12-28 2:20 p.m., Christoph Grüninger wrote:
>>> Hi Ziad,
>>> my impression is, that there is not must interest in large-scale
>>> Navier-Stokes calculation within the Dune community. Most applications
>>> are elliptic or parabolic.
>>> The only exception is some work by Robert Klöfkorn (et al.?), but that
>>> was about shock fronts that needed grid refinement along the front. So
>>> not incompressible. And quite some time ago.
>>> Some weather simulations were or are done using Dune. I don't know what
>>> type of equations they solve.
>>>
>>> Why are you asking? Do you want to use Dune for this kind of appliation?
>>> Do you want to compare its performance to other tools? What's your
>>> background? How much would you be willing to invest?
>>>
>>> Bye
>>> Christoph
>>>
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