Jeffrey DeGraff, Jr., PE will present the importance of 2D riverine hydraulic modeling at the 3rd Annual Transportation Technical Workshop for ACEC of Vermont. Jeff, a structural engineer at Hoyle, Tanner, has been working with different forms of riverine and flood modeling on projects.

The goal is to show the benefits of 2D modeling when sizing new or analyzing existing crossings, determining local velocities/unit discharges for scour analysis and countermeasure design, and examining hydraulic properties for fish habitat.

Riverine modeling is applying numerical methods such as finite difference, volume or element to approximate a solution for the 1D St. Venant, 2D St. Venant or (free surface) Navier-Stokes differential equations that describe open channel flow characteristics in a reach segment of a river.

Jeff will discuss and demonstrate assumptions/conceptual differences between 1D and 2D modeling and where each should be used. Jeff will also exhibit projects that have used 2D modeling for specific reasons. A question and answer session will follow.

This event will take place on Wednesday, March 14th from 10 am – 4 pm at the VTrans David Bill Building in Berlin, Vermont. Hoyle, Tanner is proud to be a silver sponsor of this event.