http://www.wiki.mohid.com/index.php?action=history&feed=atom&title=Geometry_diagnosticGeometry diagnostic - Revision history2026-04-04T21:18:07ZRevision history for this page on the wikiMediaWiki 1.28.0http://www.wiki.mohid.com/index.php?title=Geometry_diagnostic&diff=279&oldid=prevGuillaume: 1 revision2008-12-03T10:27:06Z<p>1 revision</p>
<table class="diff diff-contentalign-left" data-mw="interface">
<tr style='vertical-align: top;' lang='en'>
<td colspan='1' style="background-color: white; color:black; text-align: center;">← Older revision</td>
<td colspan='1' style="background-color: white; color:black; text-align: center;">Revision as of 10:27, 3 December 2008</td>
</tr><tr><td colspan='2' style='text-align: center;' lang='en'><div class="mw-diff-empty">(No difference)</div>
</td></tr></table>Guillaumehttp://www.wiki.mohid.com/index.php?title=Geometry_diagnostic&diff=278&oldid=prev192.168.20.177: /* LowerLayer */2008-08-01T10:22:08Z<p><span dir="auto"><span class="autocomment">LowerLayer</span></span></p>
<p><b>New page</b></p><div>Once the vertical discretization or [[Module Geometry|geometry]] is imposed and the bathymetry is chosen, the bottom layer can yield stability problems when using shaved cells. You can have very thin bottom cell next to a very wide bottom cell. To diagnose the existence of such problematic cells, a [[geometry diagnostic]] tool was developed.<br />
<br />
==Source-safe whereabouts==<br />
The latest source code is in the '''Mohid_V4''' repository, inside the '''small tools\GeometryDiagnostic''' folder.<br />
<br />
==Configuration==<br />
<br />
The inputs required are a bathymetry [[Grid Data|grid data]] file, a [[Module Geometry|geometry]] file, an hdf5 output filename and a [[Grid Data|grid data]] output filename.<br />
<br />
===Nomfich.dat===<br />
<br />
IN_MODEL : GeometryDiagnostics.dat<br />
<br />
===GeometryDiagnostics.dat===<br />
<br />
BATIM : Biscay_Level2__.new2<br />
GEOMETRY : D:\Aplica\BiscayAplica\GeneralData\Ocean\Geometry\Level2\Geometry.dat<br />
OUT_FILE : geomdiag_new2.hdf5<br />
OUT_GRIDDATA3D : geomdiag_new2.dat<br />
<br />
== Outputs ==<br />
The outputs are an hdf5 file and a three-dimensional [[Grid Data|grid data]] file.<br />
<br />
<htm><br />
<a href="http://content.screencast.com/users/GRiflet/folders/Jing/media/0522d989-f1b1-4475-8496-38d8f66356df/2008-08-01_1102.png"><img src="http://content.screencast.com/users/GRiflet/folders/Jing/media/0522d989-f1b1-4475-8496-38d8f66356df/2008-08-01_1102.png" width="633" height="428" border="0" /></a><br />
</htm><br />
<br />
===LowerLayerThickness===<br />
<br />
For all horizontal cells ''i'', ''j'', there is one bottom layer ''kbottom'' that defines the bottom layer thickness ''DWZ(i, j, kbottom)''; where ''DWZ'' is the 3D matrix that defines the layers thickness for every water column.<br />
<br />
LowerLayerThickness(i,j) = DWZ(i,j, kbottom)<br />
<br />
<htm><br />
<a href="http://content.screencast.com/users/GRiflet/folders/Jing/media/86accff2-ee8e-4a6a-8056-59e73a0aec22/2008-08-01_1115.png"><img src="http://content.screencast.com/users/GRiflet/folders/Jing/media/86accff2-ee8e-4a6a-8056-59e73a0aec22/2008-08-01_1115.png" width="562" height="426" border="0" /></a><br />
</htm><br />
<br />
===LowerLayerThicknessGradU===<br />
Is the ratio of neighboring cells bottom layer thickness along the X axis.<br />
<br />
aux = DWZ(i,j, kbottom)/DWZ(i,j-1, kbottom)<br />
LowerLayerThicknessGradU(i,j) = min( aux, 1/aux)<br />
<br />
<br />
===LowerLayerThicknessGradV===<br />
Is the ratio of neighboring cells bottom layer thickness along the Y axis.<br />
<br />
aux = DWZ(i,j, kbottom)/DWZ(i-1,j, kbottom)<br />
LowerLayerThicknessGradV(i,j) = min( aux, 1/aux)<br />
<br />
==See also==<br />
*[[Module Geometry]]<br />
<br />
[[Category: Tools]]</div>192.168.20.177