Dynamic viscosity

(Difference between revisions)

Revision as of 12:47, 17 May 2007

The SI unit of dynamic viscosity (Greek symbol: $\mu$ ) is the pascal-second ( $Pa\cdot s$ ), which is identical to $1 \frac{kg}{m\cdot s}$ .

The dynamic viscosity is related to the kinematic viscosity by

$\mu=\rho\cdot\nu$

where $\rho$ is the density and $\nu$ is the kinematic viscosity.

For the use in CFD, dynamic viscosity can be defined by different ways:

as a constant
as a function of temperature (e.g. piecewise-linear, piecewise-polynomial, polynomial, by Sutherland's law or by the Power law)
by using Kinetic Theory
composition-dependent
by non-Newtonian models

This article is a stub, a short article which needs to be improved. You can help by expanding it.

@@ Line 9: / Line 9: @@
 For the use in CFD, dynamic viscosity can be defined by different ways:
 * as a constant
-* as a function of temperature (e.g. piecewise-linear, piecewise-polynomial, polynomial, by [[Sutherland's Law]] or by the [[Power Law]])
+* as a function of temperature (e.g. piecewise-linear, piecewise-polynomial, polynomial, by [[Sutherland's law]] or by the [[Power law]])
 * by using [[Kinetic Theory]]
 * composition-dependent