int calculateRusanovFluxSaturationEquationIncomp_PWC(double safetyFactor, int nSpace, int pskModelFlag, int nParams, const int *rowptr, const int *colind, const int *materialTypes, double muw, double mun, const double *omega, const double *Kbar, double b, const double *rwork_psk, const double *rwork_psk_tol, const double *rwork_density_w, const double *rwork_density_n, const double *g, const double *ebq_global_qt, const double *q_lambda_bar, int nElements_global, int nElementBoundaries_element, int nInteriorElementBoundaries_global, int nExteriorElementBoundaries_global, int nQuadraturePoints_element, int nQuadraturePoints_elementBoundary, const int *interiorElementBoundaries, const int *exteriorElementBoundaries, const int *elementBoundaryElements, const int *elementBoundaryLocalElementBoundaries, const double *n, const double *q_u, const double *q_dV, const int *isDOFBoundary, const double *bc_u, double *flux)