How to get 'B' matrix scalaField from A[x] = B?

manju819 · April 14, 2014, 11:21

Hiiiii,

I've a fvScalarMatrix from which i need 'B' matrix how to extract that from the equation?

fvScalarMatrix TEqn
(
fvm::ddt(T) - fvm::laplacian(DT, T)
);

I used TEqn.source();

It is giving zeros. Please help me thank you

Regards
Manjunath

ngj · April 14, 2014, 17:16

Well, it depends on your boundary and initial conditions.

If they for instance are zeroGradient with 0 internal field, then your source should also be a bunch of zeros.

Kind regards,

Niels

manju819 · April 15, 2014, 00:03

It was the problem thank you very much

Regards
Manjunath

April 14, 2014, 11:21	How to get 'B' matrix scalaField from A[x] = B?	#1
manju819 Member Manjunath Reddy Join Date: Jun 2013 Posts: 47 Rep Power: 12	Hiiiii, I've a fvScalarMatrix from which i need 'B' matrix how to extract that from the equation? fvScalarMatrix TEqn ( fvm::ddt(T) - fvm::laplacian(DT, T) ); I used TEqn.source(); It is giving zeros. Please help me thank you Regards Manjunath

April 14, 2014, 17:16		#2
ngj Senior Member Niels Gjoel Jacobsen Join Date: Mar 2009 Location: Copenhagen, Denmark Posts: 1,900 Rep Power: 37	Well, it depends on your boundary and initial conditions. If they for instance are zeroGradient with 0 internal field, then your source should also be a bunch of zeros. 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.

April 15, 2014, 00:03	Hii NJG	#3
manju819 Member Manjunath Reddy Join Date: Jun 2013 Posts: 47 Rep Power: 12	It was the problem thank you very much Regards Manjunath

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