CFD Online Discussion Forums

Installing foam-extend-4.1 from Source (Fedora 36)

Posted August 30, 2022 at 07:13 by elvis

Just a reminder what I did on my Fedora 36
http://https://openfoamwiki.net/inde...oam-extend-4.1

Code:

 dnf install -y  python3-pip m4 flex bison git git-core mercurial cmake cmake-gui openmpi openmpi-devel metis metis-devel metis64 metis64-devel
llvm llvm-devel zlib  zlib-devel  ....

Code:

{
  echo 'export PATH=/usr/local/cuda/bin:$PATH' 
  echo 'module load mpi/openmpi-x86_64' 
}>> ~/.bashrc

...

elvis

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Regarding collaboration for research work in microchannel heat sink

Posted May 30, 2022 at 13:43 by p.b40

Dear Researchers,
I, Dr. Prabhakar Bhandari looking for an collaborative research in the field of microchannel heat sink. The work is totally numerical simulation based. If any body interested can email me on prabhakar.bhandari40@gmail.com

p.b40

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laplacian(rAU, p) == fvc::div(phiHbyA)?

Posted May 28, 2022 at 18:13 by Mars409

Quote:

Originally Posted by sharonyue

Hi,

In icoFoam's code, we have:

Code:

fvScalarMatrix pEqn
                (
                    fvm::laplacian(rAU, p) == fvc::div(phiHbyA)
                );

Why its not div(HbyA) as of the equation in the image?

This equation is deduced by myself. If it was wrong just correct me.

Though 9 yrs old, this question is worth leaving a note for, bc I will forget.

The argument of fvc::div(phiHbyA)...

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2 Easy MPI pieces

Posted May 7, 2022 at 19:03 by sbaffini (NuTBox)
Updated May 9, 2022 at 18:32 by sbaffini

Anyone who has a minimum working experience with MPI (the Message Passing Interface for distributed parallel computing) has certainly had the chance to meet certain coding patterns multiple times, especially if working with a CFD (or any other computational physics like) code.

Regrettably, MPI and parallel distributed computing is one of those areas where textbooks and online examples (even SO) are largely useless, as most (if not all) of them just simply go into the details of how...

sbaffini

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Closing on wall functions - part 8: coupled/thin wall boundary conditions

Posted April 27, 2022 at 09:37 by sbaffini (NuTBox)
Updated May 16, 2022 at 12:51 by sbaffini

It might happen that wall functions for temperature or scalars are needed when the assigned boundary condition is not simply the assigned flux or temperature/scalar, but rather a more complex one. One example is when the wall is a coupled one, with either a fluid or a solid on the other side, or it has some thickness, possibly with source terms in it and, say, radiation or convective boundary conditions assigned on the other side, or maybe some other combination of the above.

In all...

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