TUFLOW Message 3008: Difference between revisions
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{{TUFLOW_Message |
{{TUFLOW_Message |
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|tuflow_message=ERROR 3008 |
|tuflow_message=ERROR 3008 - tau0 must be >= 0. |
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ERROR 3008 |
|alt_msg=ERROR 3008 - muLow must be >= 0.<br> |
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ERROR 3008 - muHigh must be >= <number>. |
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<br> |
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|alt_msg= |
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|type=[[ERROR]] |
|type=[[ERROR]] |
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|message_desc=For the non-Newtonian viscosity formulation both tau0 and muLow cannot be negative. Further, the upper limit muHigh cannot be less than muLow. |
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|message_desc=''SMAGORINSKY turbulence model:''<br> |
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|suggestions=Ensure the supplied viscosity coefficients are correct. |
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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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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:<br> |
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[[File:PRANDTL.png | 150px]] |
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<br> |
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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. |
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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. |
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|prelink=[[TUFLOW_Message_3007|Message 3007]] |
|prelink=[[TUFLOW_Message_3007|Message 3007]] |
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Revision as of 15:29, 2 March 2023
TUFLOW Message
ERROR 3008 - tau0 must be >= 0.
Alternate Message
ERROR 3008 - muLow must be >= 0.
ERROR 3008 - muHigh must be >= <number>.
Message Type
ERROR
Description
For the non-Newtonian viscosity formulation both tau0 and muLow cannot be negative. Further, the upper limit muHigh cannot be less than muLow.
Suggestions
Ensure the supplied viscosity coefficients are correct.
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