A holistic microclimate model

You are here: Technical Model Webpage » ENVI-met Knowledgebase Overview » Nesting Grids

Differences

This shows you the differences between two versions of the page.

Link to this comparison view

Both sides previous revisionPrevious revision
Last revisionBoth sides next revision
kb:nesting [2018/07/29 20:52] – [Handling of Radiation in the Nesting Area] enviadminkb:nesting [2018/07/29 20:59] – enviadmin
Line 32: Line 32:
  
 <fs x-large>''dxy(n 1)=dxy(n) dxy(Main)''</fs> <fs x-large>''dxy(n 1)=dxy(n) dxy(Main)''</fs>
 +$$ \Delta xy (n)= \Delta xy(Main) *n  $$
  
-where //dxy(Main)// is the resolution of the main model and //n// is the first grid of the nesting zone. +where $\Delat xy(Main)$ is the resolution of the main model and $n$ is the index of the nesting grid starting with 1 at the model borders. 
- +The more Nesting Grids you use, the lower is the chance that you will get numerical problems because one or more of your model boders are interfering with internal model dynamics.
-The more Nesting Grids you use, the lower is the chance that you will get numerical problems because one or more of your model boder are interfering with internal model dynamics.+
  
 ENVI-met will warn you, if the flow field is not stable after 10 sec of integration time and suggest to increase the number of Nesting Grids. If you are not sure what causes your problems, you should always try to increase the number of Nesting Grids to be sure that this is not the point of trouble. ENVI-met will warn you, if the flow field is not stable after 10 sec of integration time and suggest to increase the number of Nesting Grids. If you are not sure what causes your problems, you should always try to increase the number of Nesting Grids to be sure that this is not the point of trouble.