j non newtonian fluid mech 123 2004 281 285 short communication constitutive laws for the matrix logarithm of the conformation tensor a b raanan fattal raz kupferman a school of ...
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...J non newtonian fluid mech short communication constitutive laws for the matrix logarithm of conformation tensor a b raanan fattal raz kupferman school computer science and engineering hebrew university jerusalem israel institute mathematics received may in revised form august accepted abstract weshowhowtotransformalargeclassofdifferential models into an equation under this transformation extensional components deformation eld act additively rather than multiplicatively is motivated by numerical evidence that high weissenberg number problem be caused failure polynomial based approximations to properly represent exponential proles developed potential merits new formulation are demonstrated nitely extensible uid two dimensional lid driven cavity at wi elsevierb v allrights reserved keywords finite differences introduction ow theright handsideaccountsforsourcesandrelaxation polymeric uids governed momentum equations both being possibly nonlinear dimensionless parameter supplemented with l...