Paige Brue

Introduction This blog post will introduce the steps involved in performing a simple sediment transport analysis using the HEC-RAS program.  HEC-RAS is capable of mobile boundary, and sediment transport modeling. A boundary is mobile when flow carries a lot of sediment through suspension and is in contact with the streambed. In these cases, the following … Read more

Boundary conditions are an important part of hydraulic modeling as they allow hydraulic modeling programs such as HEC-RAS to begin performing water surface profile calculations. In HEC-RAS, users enter boundary conditions in the Steady Flow Data Editor and the Unsteady Flow Data Editor. The following article is an introduction to applying boundary conditions in HEC-RAS … Read more

What is the HEC-RAS Controller? The HEC-RAS Controller is part of the HEC-RAS application programming interface (API). An API is a collection of tools and protocols used in programming. The HEC-RAS API is comprised of three classes: the HEC-RAS Controller, HEC-RAS Flow, and HEC-RAS Geometry. The HEC-RAS Controller, which is the largest class of the … Read more

Although HEC-RAS allows users to add structures to two-dimensional (2D) hydraulic models, adding structures can create instability issues within your model. It’s for this reason that modelers may choose to remove bridge decks. This is appropriate when the modeler is not interested in evaluating detailed bridge hydraulics. In some cases, Light Detection and Ranging (LiDAR) … Read more

In a previous blog post, I wrote an introduction to automating HEC-RAS using the HEC-RAS Controller. For this blog post, I will be showing you how to write a simple program that retrieves output data using the HEC-RAS Controller. Getting Output Using the HEC-RAS Controller Download the Appropriate Files For this exercise, I will be … Read more