
Welcome to CivilGEO Knowledge Base
Welcome to CivilGEO Knowledge Base
Welcome to CivilGEO Knowledge Base
Welcome to CivilGEO Knowledge Base
GeoHECRAS allows the user to assign or draw a 2D Mesh Zone polygon boundary and define the meshing scheme and corresponding parameters (e.g., element size, etc.). This allows the user to refine the mesh more easily in areas of interest and maintain that refinement as the model continues to be developed. For example, in a critical infrastructure area, a mesh zone could be created and defined, and a much smaller element size can be used to capture the flow direction and velocities that occur during a flood event.
In order to define a 2D Mesh Zone, a polygon is created to define the boundary of the mesh zone and a cell spacing system is provided to be used in the 2D Mesh Zone generation routine. 2D Mesh Zones can be used to densify an area where more detailed results are desired due to rapid changes in terrain or water surface elevation. Additionally, the 2D Mesh Zones allow the user to simplify an area where the water surface elevation will not change significantly, and users want to reduce the number of computation points in the 2D flow area.
To create 2D Mesh Zones, the Draw 2D Mesh Zones or Assign 2D Mesh Zones command can be used. Both commands work similarly.
The Draw 2D Mesh Zones command allows the user to manually draw individual polygons on the Map View as 2D Mesh Zones.
Follow the steps below to use the Draw 2D Mesh Zones command:
The Assign 2D Mesh Zones command allows the user to manually assign individual polygons as 2D Mesh Zones. To use this command, a polygon that can be selected must already exist on the Map View or a polygon shapefile layer must be loaded to represent mesh zones.
Follow the steps below to use the Assign 2D Mesh Zones command:
1-800-301-02-955
608-729-5100
(US and Canada)
[email protected]
+1 608-729-5100
CivilGEO India
Graphix Tower, A-13 A
3rd Floor, Sector 62
Noida, Uttar Pradesh 201309
IndiaTel:
1-800-301-02-955 or
+91 022-3831-8601
CivilGEO United States
8383 Greenway Blvd
6th Floor
Middleton, WI 53562
USATel:
608-729-5100 or
800-488-4110
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