TUFLOW Message 3008

TUFLOW Message
ERROR 3008: nut_m must be >= 0.
ERROR 3008: nut_c must be >= 0

Alternate Message

Message Type
ERROR

Description
SMAGORINSKY turbulence model:
When SMAGORINSKY turbulence model is used, nut_m is the Smagorinsky coefficient and nut_c is a constant eddy viscosity component. These two parameter must be >=0.

PRANDTL turbulence model:
If the PRANDTL turbulence model is selected, the viscosity is modelled based on the turbulence length scale l and the turbulence intensity k as follows:

where Cc (nut_c) is a constant component of the viscosity, and the maximum value of l is limited by Cm * depth, where Cm (nut_m) is a coefficient to define the turbulence length scale.

Suggestions
Ensure that the parameters specified by the Viscosity Coefficients == command are larger than zero.

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