HEC-RAS 2D Modeling






With the release of HEC-RAS 5.0 (and newer versions), the Hydrologic Engineering Center (HEC) has added the ability to perform two-dimensional (2D) hydrodynamic routing to the HEC-RAS computer model.  This webinar will provide an overview of the new HEC-RAS 2D tools and solution processes and the basic capabilities of the HEC-RAS 2D model.  The 2D flow modeling can be accomplished by adding 2D flow area element.  This is similar to adding a storage area in a 1D unsteady flow model.  The flow area is developed by adding a 2D polygon, developing the computational mesh, and linking the 2D flow area either to a 1D model element or directly connecting boundary conditions to the 2D flow area.  Each of these steps will be discussed.  Guidelines on when to use 2D flow modeling and an example problem of developing a simple computational mesh and running the model will also be covered. 

Participants will gain an understanding of:

I. HEC-RAS 2D flow modeling advantages/capabilities

II. Flexible computational mesh

III. Cell and face pre-processing

IV. Boundary conditions

V. Running the model

Special thanks to our sustaining members