Difference between revisions of "TUFLOW Message 3008"
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|suggestions=Ensure that the parameters specified by the <font color="blue"><tt>Viscosity Coefficients </tt></font> <font color="red"><tt>== </tt></font> command are larger than zero. | |suggestions=Ensure that the parameters specified by the <font color="blue"><tt>Viscosity Coefficients </tt></font> <font color="red"><tt>== </tt></font> command are larger than zero. | ||
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|prelink=[[TUFLOW_Message_3007|Message 3007]] | |prelink=[[TUFLOW_Message_3007|Message 3007]] | ||
|uplink=[[3xxx_TUFLOW_Messages|3xxx Messages]] | |uplink=[[3xxx_TUFLOW_Messages|3xxx Messages]] | ||
|nextlink=[[TUFLOW_Message_3009|Message 3009]] | |nextlink=[[TUFLOW_Message_3009|Message 3009]] | ||
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Revision as of 16:45, 1 July 2022
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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