Welcome to CivilGEO Knowledge Base
Welcome to CivilGEO Knowledge Base
Welcome to CivilGEO Knowledge Base
Welcome to CivilGEO Knowledge Base
2D flow areas are regions of a model in which the flow through that region will be computed with the HEC-RAS two-dimensional flow computation algorithms. 2D flow areas are defined by laying out a polygon representing the outer boundary of the 2D flow area and then specifying the computational mesh. Refer to this article in our knowledge base to learn more about 2D flow areas.
The following image shows a 2D flow area polygon boundary for an area that is protected by a levee.
HEC-RAS 2D flow areas can be defined by either drawing or assigning the polygon boundary using the following commands:
HEC-RAS 2D flow areas can be defined by drawing the polygon boundary of the 2D flow area on the Map View using the Draw 2D Flow Areas command.
Follow the steps below to draw a 2D flow area:
HEC-RAS 2D flow areas can be defined by assigning an already drawn polyline or polygon as the boundary of the 2D flow area using the Assign 2D Flow Areas command.
Follow the steps below to assign an already drawn polyline or polygon as a 2D flow area:
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