Rewrite residuals variable to use a declaration inside the solver like this:
#include "dimensionedTensor.H"
dimensionedTensor sigma
(
"sigma",
dimensionSet( 1, -1, -2, 0, 0, 0, 0),
tensor( 0, 0, 0, 0, 0, 0, 0, 0, 0)
);
Info<< "Sigma: " << sigma << endl;
Rewrite residuals variable to use a declaration inside the solver like this: