Tuflow

TUFLOW Message 2998: Difference between revisions

Browse history interactively
← Older edit
Content deleted Content added
VisualWikitext
No edit summary
No edit summary
 
(3 intermediate revisions by 2 users not shown)
Line 3:
|alt_msg=NA
|type=[[ERROR]]
|message_desc=Model unstable. The model has gone unstable in the 2D domain. A number of <u>[[TUFLOW_Message_2991|WARNING 2991]]</u> messages may be issued prior to ERROR 2998. There are a varieties of reasons that a TUFLOW model may go unstable in the 2D, these can include:<br>
* Poor topography data
* Inappropriate timestep
* Poorly configured external boundary
* Poorly configured 1D/2D model interface
 
|suggestions=Import the messages layer in to your GIS package. A negative depth can be caused by a number of things, look at the '''_zpt_check''' file to see if there is a steep change in topography, the '''uvpt_check''' shows the Manning's n value at each cell side. Check this roughness suitable.<br>
|suggestions=Import the messages layer in to your GIS package. Check for the occurrence of <u>[[TUFLOW_Message_2991|WARNING 2991]]</u> messages. The first occurrence of these WARNING messages is the likely location of the source of the problem. Carry out the suggestions as listed for <u>[[TUFLOW_Message_2991|WARNING 2991]]</u> to resolve the instability.
A negative depth can also be caused by a badly behaving boundary condition nearby, check if this is occurring near a boundary. This can be 1D/2D, a external 2d (such as a HQ boundary) or a 2D/2D boundary.<br>
 
View the velocity vectors prior to the message are the flow patterns realistic.<br>
|discussion_page=* [[Talk:TUFLOW Message 2998|Discuss Message 2998]]
|link3=''
|link4=''
|prelink=[[TUFLOW_Message_2991|Message 2991]]
|uplink=[[2xxx_TUFLOW_Messages|2xxx Messages]]
|nextlink=[[TUFLOW_Message_2999|Message 2999]]
}}
Retrieved from "https://wiki.tuflow.com/TUFLOW_Message_2998"