TUFLOW Message 3008

From Tuflow
Revision as of 13:58, 16 July 2018 by ShuangGao (talk | contribs)
Jump to navigation Jump to search

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 lm and the turbulence intensity k as follows:


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

Suggestions
Make sure the parameters specified by the Viscosity Coefficients == command is larger than zero.


Up
Go-up.png 3xxx Messages