[waves2Foam] Changing the alphaExponent value in the relaxationSchemeSpatial.C file

arieljeds · September 11, 2016, 10:14

Hi all,

I want to try changing the alphaExponent value in the relaxationSchemeSpatial.C file and then re-run a simulation with the different value. I went in and changed the value in the code and then tried to compile with wmake and got the following error:

Code:

In file included from relaxationZone/relaxationScheme/spatial/relaxationSchemeSpatial.C:27:0:
relaxationZone/relaxationScheme/spatial/relaxationSchemeSpatial.H:43:30: fatal error: relaxationScheme.H: No such file or directory
compilation terminated.
make: *** [Make/linux64GccDPOpt/relaxationSchemeSpatial.o] Error 1

This is my first time trying to modify any code in OpenFOAM or waves2Foam so I'm not even sure if this is the correct approach to modifying the source code. Can anyone offer some feedback on how to do this?

Thanks in advance
Ariel

ngj · September 12, 2016, 08:45

Hi Ariel,

You should use the ./Allwmake command. It is the only way to make sure that cross version compatibility is handled; no matter how little a change you make.

Furthermore, if I understand correctly, what you want, then the shape factor (alpha) is given a default value of 3.5, but you can change it by providing the correct keyword. Please consult the source code, as I do not have access to it at present.

Kind regards,

Niels

arieljeds · September 12, 2016, 08:55

Hi Niels,

Thanks for your quick response. Ok that makes sense then. I should have realised I could just add the alphaExponent value. I'll give this a go and see how I get on.

In a related question, I've noticed that the use of relaxation zones seems to affect the free surface elevation further up the domain, resulting in lower free surface elevation than expected. Is this something to do with the implementation of the relaxation zones?

Thanks,
Ariel

September 11, 2016, 10:14	Changing the alphaExponent value in the relaxationSchemeSpatial.C file	#1
arieljeds Senior Member ArielJ Join Date: Aug 2015 Posts: 127 Rep Power: 10	Hi all, I want to try changing the alphaExponent value in the relaxationSchemeSpatial.C file and then re-run a simulation with the different value. I went in and changed the value in the code and then tried to compile with wmake and got the following error: Code: In file included from relaxationZone/relaxationScheme/spatial/relaxationSchemeSpatial.C:27:0: relaxationZone/relaxationScheme/spatial/relaxationSchemeSpatial.H:43:30: fatal error: relaxationScheme.H: No such file or directory compilation terminated. make: *** [Make/linux64GccDPOpt/relaxationSchemeSpatial.o] Error 1 This is my first time trying to modify any code in OpenFOAM or waves2Foam so I'm not even sure if this is the correct approach to modifying the source code. Can anyone offer some feedback on how to do this? Thanks in advance Ariel

September 12, 2016, 08:45		#2
ngj Senior Member Niels Gjoel Jacobsen Join Date: Mar 2009 Location: Copenhagen, Denmark Posts: 1,900 Rep Power: 37	Hi Ariel, You should use the ./Allwmake command. It is the only way to make sure that cross version compatibility is handled; no matter how little a change you make. Furthermore, if I understand correctly, what you want, then the shape factor (alpha) is given a default value of 3.5, but you can change it by providing the correct keyword. Please consult the source code, as I do not have access to it at present. Kind regards, Niels __________________ Please note that I do not use the Friend-feature, so do not be offended, if I do not accept a request.

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September 12, 2016, 08:55		#3
arieljeds Senior Member ArielJ Join Date: Aug 2015 Posts: 127 Rep Power: 10	Hi Niels, Thanks for your quick response. Ok that makes sense then. I should have realised I could just add the alphaExponent value. I'll give this a go and see how I get on. In a related question, I've noticed that the use of relaxation zones seems to affect the free surface elevation further up the domain, resulting in lower free surface elevation than expected. Is this something to do with the implementation of the relaxation zones? Thanks, Ariel