Sur une Classe de Fluides Non-Newtoniens

摘要

A constitutive law for a class of non newtonian fluids is considered. The stress-tensionσis defined as an element in the subgradient of a convex, l.s.c. function:σ ∈ ∂ϕ(D);Dis the tension of the rate of deformation. We give existence and uniqueness theorems. Some examples (Bingham fluid, pseudo-plastic and dilatant fluids) are also