COUTINHO, B. G.; http://lattes.cnpq.br/6283670909377416; COUTINHO, Brauner Gonçalves.
Résumé:
This work presents a numerical solution for two-phase (oil-water) flows using a
simplified black-oil model written in mass fractions and investigation about an appropriate
treatment for the non-ortogonal terms. The equations are discretized using the finite-volume
method and generalized coordinates with a fully implicit formulation. In each time step, the
mass conservation equations for the components are solved for pressure and mass fraction of
the oil. Results of saturation distribution, oil recovery and water cut are presented and
analyzed. Results based on the number of iterations obtained with Newton method, solver
iterations, CPU time used for Jacobian matrix construction, as well as, in the solution of the
linear systems are used to analize the effect of the non-orthogonal terms. For each analyzed
case, the complete procedure is evaluated for several grid angles.
