I'm trying to solve the equation ∇⋅n∇V- ∇⋅n∇E_0=0 where n is a density V is the electric Potential and E_0 = (v x B)⋅x. Both E_0 and V are defined as volScalarFields but when I try to input it as laplacian(n, V - E_0) is gives me
error: no matching function for call to 'laplacian(Foam::volScalarField&, Foam::tmp<Foam::GeometricField<double Foam::fvPatchField, Foam::volMesh> >)'
The code is complaining about you passing a tmp<> object. This results from 'V-E0'. You need to precompute V-E and then solve.
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