TUFLOW Message 3008: Difference between revisions
No edit summary |
No edit summary |
||
| Line 13: | Line 13: | ||
<br> |
<br> |
||
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. |
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 |
|suggestions=Make sure the parameters specified by the <font color="blue"><tt>Viscosity Coefficients </tt></font> <font color="red"><tt>== </tt> command is larger than zero. |
||
|discussion_page=* [[Talk:TUFLOW Message 3008|Discuss Message 3008]] |
|discussion_page=* [[Talk:TUFLOW Message 3008|Discuss Message 3008]] |
||
Revision as of 13:58, 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 larger than zero.
| Up |
|---|
 3xxx Messages
|