Problem creating a new Wallfunction on OF 2.2 !
 

Dear all,
I'm trying to implement a new wall Function into OF 2.2 but I keep having bugs at compiling.

Here is what I did:
1) I copied the wall compressible turbulence model to my desktop:
opt/openfoam220/src/turbulenceModels/compressible/RAS

2) I made a copy of mutkRoughWallFunction and called it MYmutkRoughWallFunction
I've opened the MYmutkRoughWallFunction.C and MYmutkRoughWallFunction.H and I have replaced all "mutkRoughWallFunction" by "MYmutkRoughWallFunction" with a case matching.

3) I made a copy of alphaWallFunctions and called it MYalphaWallFunctions
I've opened the MYalphaWallFunctions.C and MYalphaWallFunctions.H and I have replaced all "alphaWallFunctions" by "MYalphaWallFunctions" with a case matching.

4) I went to the Make folder and I've changed the files to
5) Then I made a "wclaen" and after a "wmake" but a problem occurred during compiling:
See enclosed for the bug report

6) To solve my problem, I tried to include a maximum of library into the options file:
But the problem remain the same...

Does anybody know how to compile a new wall function on OpenFoam 2.2 ? You can find enclosed my custom RAS model.

Small up:)

Second up :(

Error while compiling a custom wall function (OF 2.2)
 

Dear all,
I'm trying to implement a new wall Function into OF 2.2 but I keep having bugs at compiling. I guess I'm doing something wrong but I don't know where.

PART 1 I tried to create a Custom library

Here is what I did:
1) I copied the wall compressible turbulence model to my desktop:
opt/openfoam220/src/turbulenceModels/compressible/RAS

2) I made a copy of mutkRoughWallFunction folder and called it MYmutkRoughWallFunction
I've opened the MYmutkRoughWallFunction.C and MYmutkRoughWallFunction.H and I have replaced all "mutkRoughWallFunction" by "MYmutkRoughWallFunction" with a case matching.

3) I made a copy of alphaWallFunctions and called it MYalphaWallFunctions
I've opened the MYalphaWallFunctions.C and MYalphaWallFunctions.H and I have replaced all "alphaWallFunctions" by "MYalphaWallFunctions" with a case matching.

4) I went to the Make folder and I've changed the files to
5) Then I made a "wclaen" and after a "wmake" but a problem occurred during compiling. You can see enclosed the bug report.

I thought the problem might come from a missing library but even adding all the possible OpenFoam library to the option file doesn't solve the problem.

PART 2 I tried to edit OpenFoam library

Then I tried to edit the actual OpenFoam compressible library by editing the source files in opt/openfoam220/src/turbulenceModels/compressible/RAS and recompiling all OpenFoam but I still cannot use the new wall function.

I did the same things as described above but this time for the libcompressibleRASModels. I didn't change any code, I have simply copied the wall function code and replaced the names by adding "MY".

I wonder, is there any special "link" that is hard coded ? Also, how does the list of the possible wall function is generated when a solver settings are wrong ? Is it dynamic or hard coded ?

Thx in advance, Fred

Greetings Fred,

I've merged your latest thread into this one, since it's on the same topic. ;)

As for the problem you're having, it's as simple as running wmake like this:
This is very briefly explained in the User Guide, section "3.2.2.4 Running wmake", table 3.1: http://www.openfoam.org/docs/user/co...php#x10-750011

Ironically, 8 days ago this was fixed in OpenFOAM 2.2.x: https://github.com/OpenFOAM/OpenFOAM...4c48941c9f1981 - so, if you had the latest OpenFOAM 2.2.x, you wouldn't have had this problem ;)


By the way, I saw that you had forgotten the "libso" option, because of this line:
The last name "OpenFOAM.out" is the indication that it tried to build it as an executable.


One last thing is that OpenFOAM commands usually respond to "-help":
Best regards,
Bruno

My mistake then :p

I have also found another mistake. I forgot to change the wall function name in the .H file. I had a bug of "double declaration"... Now the code works.
Once I finish coding the wall function I will create a topic with the source code and the procedure to compile it.

Thx again ;)

compile custom wall function in v 2.3.x
 

I am trying to compile a custom rough-wall function in version 2.3.x. I have tried starting with the nutkRoughWallFunction by renaming it and compiling it into its own library. when I try to include the library (in system/controlDict) it isn't loaded by the solver.

I tried a second way, by copying nutkRoughWallFunction to say nutk2RoughWallFunction, changing the file names and all occurences in the .H and .C files, and then re-compiling libturbulenceModels with the new .C file. The library compiles, but then when I try to access the new boundary condtion the solver cannot find it.

Does any one have a suggestion?

I thought I might add more details to entice comments from the community. If I copy $FOAM_SRC/TurbulenceModels/turbulenceModels to my work space and change only the last line in Make/files from

LIB = $(FOAM_LIBBIN)/libturbulenceModels

to

LIB = $(FOAM_USER_LIBBIN)/libmyTurbulenceModels

I can compile the library with wmake libso. When I run a case and include the line
libs( "libmyTurbulenceModels.so" ); in my system/controlDict, and the solver produces a long stream of information complaining about things such as

Duplicate entry atmBoundaryLayerInletVelocity in runtime selection table fvPatchField

I understand that there are duplicate entries. So, I try to modify an existing wall function by just changing its name. Such as converting nutkRough to nutk2Rough. I update the Make/files file to reflect the new wallFunction, and the library compiles. When I run simpleFoam on a case that uses the new wall function, I get an error that says:
Create mesh for time = 0

Reading field p

Reading field U

Reading/calculating face flux field phi

Selecting incompressible transport model Newtonian
Selecting RAS turbulence model kOmegaSST


--> FOAM FATAL ERROR:

request for turbulenceModel turbulenceProperties from objectRegistry region0 failed
available objects of type turbulenceModel are
0()

From function objectRegistry::lookupObject<Type>(const word&) const
in file /l/kjmaki/OpenFOAM/OpenFOAM-2.3.x/src/OpenFOAM/lnInclude/objectRegistryTemplates.C at line 198.

FOAM aborting

Hi, Kevin.

You should copy source code from $FOAM_SRC/turbulenceModels (lower case "t"), as the simpleFoam solver is linking to the libincompressibleTurbulenceModel.so generated by $FOAM_SRC/turbulenceModels [1].
One more thing, you should only keep the wall-function code which you want to modify, other code should be removed from your working directory otherwise it will complain duplicated entries :D.

FYI: A new turbulence modelling framework is introduced in OpenFOAM 2.3.0 [2].

Best regards,
Weiwen

[1] https://github.com/OpenFOAM/OpenFOAM...m/Make/options
[2] http://www.openfoam.org/version2.3.0/multiphase.php