Differences
This shows you the differences between two versions of the page.
| flow_problems [2012/07/08 23:59] – created marenlie | flow_problems [2012/07/30 23:14] (current) – removed enviadmin | ||
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| - | ====== Flow Problems ====== | ||
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| - | ===== Flow Problems: Reason and Handling ===== | ||
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| - | With no doubt, flow problems are the number one troublemaker in simulations (at least since the turbulence model got the smart trouble shooting implemented). | ||
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| - | Flow problems are indicated by the ENVI-met message | ||
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| - | < | ||
| - | Updating Flow: Cancelled after XXX Steps | ||
| - | Warning: | ||
| - | </ | ||
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| - | where XXX is the selected maximum amount of iteration steps (normally 200, see [[Interface]], | ||
| - | This message indicates, that ENVI-met is not able to calculate an accurate wind field in the given model constellation. As a result of this, the model is not [[mass conserving]] at one or more points and will probably produce some kind of fatal error in the next few calculation steps. \\ | ||
| - | Normally one or more of the following points are the reason for this problem: | ||
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| - | - The [[Total Model Height|Model Height]] is not sufficient | ||
| - | - The amount of [[Nesting Grids]] is not sufficient | ||
| - | - The Model Geometry is too complex | ||
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| - | In case of point 1 or 2, click on the link to hear more about the problem. \\ | ||
| - | In case of point 3, there is no general solution. Probably your model domain is very fragmented. Try to change the resolution of the model, simplify it or check, if a [[Model Rotation]] might improve the situation! | ||
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