Quick question: What error? There is no error message in the output that you provided.

Hi Bruno,

You are right, that was my mistake. Sorry for spamming.

Syavash

Hi all,

I was trying to compile perturbU, following the git instructions on the wiki page. But unfortunately I encountered the following compilation error.

g++ -m64 -Dlinux64 -DWM_ARCH_OPTION=64 -DWM_DP -DWM_LABEL_SIZE=32 -Wall -Wextra -Wold-style-cast -Wnon-virtual-dtor -Wno-unused-parameter -Wno-invalid-offsetof -O3 -DNoRepository -ftemplate-depth-100 -I/opt/openfoam30/src/meshTools/lnInclude -I/opt/openfoam30/src/finiteVolume/lnInclude -IlnInclude -I. -I/opt/openfoam30/src/OpenFOAM/lnInclude -I/opt/openfoam30/src/OSspecific/POSIX/lnInclude -fPIC -c perturbU.C -o Make/linux64GccDPInt32Opt/perturbU.o
perturbU.C:43:32: fatal error: wallDistReflection.H: No such file or directory
#include "wallDistReflection.H"

Can someone point me in the right direction? I am using OpenFOAM version 3.0.0.
I tried to search OpenFOAM source directory for the include file but since I am not too familiar with the code I could not find anything relevant.

Thanks

Quick answer: I've updated the repository and the wiki page for OpenFOAM 3.0: https://openfoamwiki.net/index.php/Contrib/perturbU

Please let me know if it works as intended.

quick reply: compiled without any errors.

thanks for the fix. I was trying to figure out vector calculations by myself and apparently they tidied up the walldist routines which caused the compilation error.

I will update after some test runs.

Great job wyldkat.
Just two points for user:

1. For OF3.0.x the structure of the transportProperties seems to be changed a little bit and perturbUChannel complains about not being able to read it.
Change the constant/transportProperties from:

to

2. The default perturbUDict has the bulk velocity set to false. As Eugene mentions in his thesis this would lead to damping the perturbations, to get a turbulent field in steady state set it back to true.

Many thanks anishtain4, I've added a section in the wiki page with the information that you've provided: http://openfoamwiki.net/index.php/Co...bU#Usage_Notes

perturbU in a ribbed channel
 

Hey guys,

Do we need the perturbU-Utility just to initialize the turbulent flow only in a channel or cylinder, or can I use this utility for ribbed channel :confused:?


Thanks for your support.

@Mirage: You can use the utility to initialize the field before your ribs. Or initialize a domain without ribs and then map it in your case (if you have periodic boundary conditions).

Also in OF5.0, in the perturbUCylinder/perturbU.C, line 67 should be changed from:
to

Of5
 

Can you explain this change, please?

Any can help me?

I am wondering the meaning of betaPlus, sigma alphaPlus and alphaPlus in perturbU.C, How chould they affect the perturbation results. Thank you.

Dear Foamers,
First of all thanks to Eugene de Villiers for sharing such an utility tool with the open world. I m trying to use this tool but at the last step when I was using it for my simulation it is giving a command like
I succesfully installed it in my LInux, pasted the file perTurbUdict in system directory but inspite of all these its showing the error.
If anyone knows how to tackle this issue will be grateful if you share.