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Hello All

Posted September 18, 2016 at 15:43 by KTW310

Hi, my name is Keith Wilkins and I am a student at Temple University in Philadelphia, PA. I am studying Mechanical Engineering and just started taking a CFD course a few weeks ago. I graduate this upcoming December and expect to be continuing education in Fall 2017 for a masters, whether it will be in Mechanical or Electrical Engineering is yet to be decided.

So far CFD is very interesting and I am excited to learn more about it so I can use it for my senior design project. I am working...
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Dual-Booting : win7 & linux-mint

Posted August 28, 2016 at 18:50 by kindle
Updated October 12, 2016 at 11:33 by kindle (clarity)

Installation from nothing : First win7 then linux-mint.
Win7 writes in MBR something to control boot and linux uses grub to control boot which will be able to boot windows.
Why not in the reverse order?
A complete re-installtion of win7 may over write ALL in MBR meaning the part that will call the actual grub configuration (in /boot or /etc/grub.d not sure...), therefore the repair of the linux booting is needed.
Result: grub boot first, if you choose "windows"...
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Numerics in OpenFoam - PBiCG vs. PCG

Posted August 18, 2016 at 14:13 by kindle
Updated February 23, 2017 at 04:13 by kindle

So the numerical scheme (fvScheme) will affect the property of the matrix to invert and we should choose properly the solver/solving algorithm (fvSolution) in order to solve it properly. Depending on the form of matrix depended on structured or unstructured mesh something like that.

Originally Posted by thg View Post
Hi Frog,

Meindert already mentioned, the difference between a PCG or a PBiCG,...
you can find in any textbook about linear iterative solvers like
Wessling, Saad, Trefethen, Stran,....
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Posted in Solver
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Compile the solver laplacianFoam

Posted August 17, 2016 at 10:22 by kindle
Updated February 23, 2017 at 04:13 by kindle

laplcacianFoam is an implemented solver in OpenFOAM, which can be found in WM_PROJECT_DIR/platforms/.../bin (executable), .../application/solver/basic (dep) and WM_PROJECT_DIR/application/solver/basic (src).

Tried to compile from $FOAM_RUN, using laplacianFoam1. After comparing with authentic one, success.
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Posted in programming, Solver
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Writing the last iteration for steady state simulations

Posted August 17, 2016 at 05:09 by Ramwi

Ok, I have a very bad memory and furthermore, I did not find the solution to the bellow described problem right away. So, I will use this place to store the solution for future use.

Note: The proposed approach might be overcomplicated. If it is so, please let me know what is the "proper way".

Problem description: You run a steady state simulation (e.g. simpleFOAM) and you control the endTime (number of iterations) via the residualControl. Thus, the number of iterations...
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Posted in Tips and tricks
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