bratu's problem implementation -- CFD Online Discussion Forums

June 11, 2013, 15:27	bratu's problem implementation	#1
shash Member shiv Join Date: Jun 2012 Location: Lucknow, IN Posts: 51 Rep Power: 13	Hi all, I am trying to solve the equation *laplacian(T) + constant1exp(T/(1+constant2T))=0* using the laplacianFoam solver but i am not sure how to implement the non-linear part. thou i have tried this: I took taylor expansion of exp() and took terms till 2nd order and implemented this eqn. fvm::ddt(T) - fvm::laplacian(DT, T) - zhi == - fvm::Sp(fvzhi(2+mag(fvc::Sp(1+2nu, T)))/(2*magSqr(1+mag(fvc::Sp(nu, T)))), T) Please let me if it can be done other way.

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