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8.4 Viscosity

FLUENT provides several options for definition of the fluid viscosity:

Each of these input options and the governing physical models are detailed in this section. (User-defined functions are described in the separate UDF Manual.) In all cases, define the Viscosity in the Materials panel.

Define $\rightarrow$ Materials...

Viscosities are input as dynamic viscosity ( $\mu$) in units of kg/m-s in SI units or lb $_m$/ft-s in British units. FLUENT does not ask for input of the kinematic viscosity ( $\nu$).




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