[bou]

Dear,

I would like to define a tensor like this:

tensor D(w*Dm*I + ((alphaL-alphaT))*(U*U)/mag(U) + mag(U)*alphaT*I)

where:
- w, Dm, alphaL, alphaT are volScalarField objects,
- I, tensor I (1,0,0,0,1,0,0,0,1).

Then I would like to reuse D for example in expression like:

D*grad(C)

where C is a volScalarField.

Can you help me please?

Best regards,

Bou