TUFLOW Message 3008: Difference between revisions
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|type=[[ERROR]] |
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|message_desc=''SMAGORINSKY turbulence model:''<br> |
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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.<br><br> |
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''PRANDTL turbulence model:''<br> |
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|suggestions=XX. |
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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. |
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|suggestions=Make sure the parameters specified by the '''Viscosity Coefficients''' command is . |
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|discussion_page=* [[Talk:TUFLOW Message 3008|Discuss Message 3008]] |
|discussion_page=* [[Talk:TUFLOW Message 3008|Discuss Message 3008]] |
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Revision as of 13:55, 16 July 2018
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 .
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