SRFFreestreamVelocity BC does not work

Tobias Adam · January 29, 2014, 10:34

Hello everyone

I´m using SRFSimpleFoam. So I use SRFVelocity as Boundary Condition(BC) for the Inlet in the Urel file. This works perfectly good.
But when I try to use SRFFreestreamVelocity as BC for another patch an error message occurs:

--> FOAM FATAL IO ERROR:
keyword UInf is undefined in dictionary "/nfs/home/adam/OpenFOAM/adam-2.2.x/run/Bachelorarbeit/3sym-SRF/0/Urel.boundaryField.SHROUD"

file: /nfs/home/adam/OpenFOAM/adam-2.2.x/run/Bachelorarbeit/3sym-SRF/0/Urel.boundaryField.SHROUD from line 63 to line 66.

From function dictionary::lookupEntry(const word&, bool, bool) const
in file db/dictionary/dictionary.C at line 402.

I don´t understand this! The data and folders of both patches are in the same directory. So it should be no problem for OpenFoam to use both of them, if one works perfectly good!

I´d be glad for any help.

Best regards Tobias

Tobias Adam · January 31, 2014, 05:17

My problem is, that I´m not very good in programming...
Do I have to move the folder of SRFFreestreamVelocity to another directory?

andre.weiner · January 31, 2014, 05:36

Hello,

it seems like at your patch the UInf variable isn't defined.
the patch entry should look like this:

Code:

    myPatch
    {
        type            SRFFreestreamVelocity;
        UInf            uniform (0 0 0);
        relative        no;
        value           uniform (0 0 0);    // initial value
    }

where UInf is the freestream velocity in the absolute frame.

Good luck!

Tobias Adam · January 31, 2014, 06:19

Thank you very much!

As I looked for the patch files, I should have had a look on the required input for this patch.
I thought it was the same as for SRFVelocity.

Problem solved :-)

Best reagards Tobi

January 29, 2014, 10:34	SRFFreestreamVelocity BC does not work	#1
Tobias Adam Member Tobias Adam Join Date: Oct 2013 Location: Siegen Posts: 55 Rep Power: 13	Hello everyone I´m using SRFSimpleFoam. So I use SRFVelocity as Boundary Condition(BC) for the Inlet in the Urel file. This works perfectly good. But when I try to use SRFFreestreamVelocity as BC for another patch an error message occurs: --> FOAM FATAL IO ERROR: keyword UInf is undefined in dictionary "/nfs/home/adam/OpenFOAM/adam-2.2.x/run/Bachelorarbeit/3sym-SRF/0/Urel.boundaryField.SHROUD" file: /nfs/home/adam/OpenFOAM/adam-2.2.x/run/Bachelorarbeit/3sym-SRF/0/Urel.boundaryField.SHROUD from line 63 to line 66. From function dictionary::lookupEntry(const word&, bool, bool) const in file db/dictionary/dictionary.C at line 402. I don´t understand this! The data and folders of both patches are in the same directory. So it should be no problem for OpenFoam to use both of them, if one works perfectly good! I´d be glad for any help. Best regards Tobias

January 31, 2014, 05:36		#3
andre.weiner New Member Andre Weiner Join Date: Aug 2012 Posts: 29 Rep Power: 14	Hello, it seems like at your patch the UInf variable isn't defined. the patch entry should look like this: Code: myPatch { type SRFFreestreamVelocity; UInf uniform (0 0 0); relative no; value uniform (0 0 0); // initial value } where UInf is the freestream velocity in the absolute frame. Good luck!

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
How to work with constant pressure?	Martin	Siemens	2	February 25, 2009 14:23
Getting FoamX to work	shaun	OpenFOAM Installation	12	March 23, 2007 09:55
work related to brake study of a vehical	aero	Siemens	3	November 23, 2006 08:43
Why do the Plant library cases don't work?	Alumna	Phoenics	6	June 22, 2004 13:08
why my In-Form doesn't work?	green	Phoenics	2	May 27, 2004 22:03

January 31, 2014, 05:17		#2
Tobias Adam Member Tobias Adam Join Date: Oct 2013 Location: Siegen Posts: 55 Rep Power: 13	My problem is, that I´m not very good in programming... Do I have to move the folder of SRFFreestreamVelocity to another directory?

January 31, 2014, 06:19		#4
Tobias Adam Member Tobias Adam Join Date: Oct 2013 Location: Siegen Posts: 55 Rep Power: 13	Thank you very much! As I looked for the patch files, I should have had a look on the required input for this patch. I thought it was the same as for SRFVelocity. Problem solved :-) Best reagards Tobi