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Implementation of new convection/interpolation scheme

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Old   October 16, 2013, 10:06
Default Implementation of new convection/interpolation scheme
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Anne Gerdes
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Dear Foamers,

I would like to implement a convection scheme which is of higher order than upwind.
I assume that the schemes are in

HTML Code:
src/finiteVolume/interpolation/surfaceInterpolation
I am afraid that I can not clearly see where exactly the upwind of first order is implemented.
It should be something like
HTML Code:
Uf= max(phi,0) U(P) + max(-phi,0)U(N)
Is there a general scheme in OpenFOAM which computes the value phi at the face via a formula that also includes a deferred correction, like the "k-scheme" which computes phi from

HTML Code:
phi = U(upwind) + 1/4 [(1+k) (U(downwind) - U(upwind)) + (1-k) (U(upwind) - U (upwindupwind))]
and by setting k to different values the scheme is selected?

It would be great if someone could show me where in the code the implementation can be found.
I use OF-2.1.1.

Thank you very much in advance!

Anne
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Old   May 19, 2016, 12:57
Default implementation of backwardD2dt2Scheme
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Hi

i am working with of24x and i got backwardD2dt2Scheme from foam extended 3.2 and now i want to compile it to the openfoam library , the address of backwardD2dt2Scheme is in (/home/OpenFOAM/OpenFOAM-2.4.x/src/finiteVolume/finiteVolume/d2dt2Schemes)
and the backwardD2dt2Scheme to be compiled are attached

could you please help me ?

best regards
mohammad jam


backwardD2dt2Scheme.C

backwardD2dt2Scheme.H

backwardD2dt2Schemes.C
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Old   May 19, 2016, 13:06
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Hi Anne

did u solve the problem? if so, how did u compile new scheme?
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Old   April 13, 2017, 16:38
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Quote:
Originally Posted by Mohammad Jam View Post
Hi Anne

did u solve the problem? if so, how did u compile new scheme?
Hi Mohammad,

Hope you are doing fine.

If I understood correctly, (and also if you are still looking for solution ) :

For compile new code in OpenFOAM, at first you must add your files in the folder that you want. ( for example in your case : ~/OpenFOAM/OpenFOAM-2.4.x/src/finiteVolume/finiteVolume/d2dt2Schemes/backwardD2dt2Scheme )

Then do not forget to add the directory towards the (.C file) inside the Make folder in ~/OpenFOAM/OpenFOAM-2.4.x/src/finiteVolume.
(you shoud find d2dt2Schemes = finiteVolume/d2dt2Schemes in Files and just add $(d2dt2Schemes)/backwardD2dt2Scheme/backwardD2dt2Schemes.C)

Now everything seems ready . Just come back to OpenFOAM-2.4.x and run ./Allwmake

hoping this reply will be helpful.

Have fun
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Old   April 15, 2017, 17:59
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Hi dear mahdi,
Thank you for your kind response.
Best regards,
Mohammad
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