Rivlin–Ericksen tensor explained

A Rivlin–Ericksen temporal evolution of the strain rate tensor such that the derivative translates and rotates with the flow field. The first-order Rivlin–Ericksen is given by

Aij(1)=

\partialvi+
\partialxj
\partialvj
\partialxi
where

vi

is the fluid's velocity and

Aij(n)

is

n

-th order Rivlin–Ericksen tensor.Higher-order tensor may be found iteratively by the expression

Aij(n+1)=

l{D
}A_.

The derivative chosen for this expression depends on convention. The upper-convected time derivative, lower-convected time derivative, and Jaumann derivative are often used.

References