Model Parameter Setup
To facilitate model setup and calibration, EE provides a robust GUI for setting key EFDC+ parameters. A wealth of error checking functions and on-screen tooltips help you set appropriate values for your simulation without having to constantly refer to the user’s guide.
EE allows you to easily set the model run start and end times as well as providing assistance with recommended time steps.
Setting dynamic time stepping and managing the model time with both Julian and Calendar dates is streamlined in EE.
EE provides default turbulence options for turbulent diffusion and vertical eddy viscosity with common settings and values from EE’s template that allow you to quickly get your model running.
Two approaches are available for handling the scour/deposition processes when conducting sediment transport modeling; the EFDC+ original sediment transport approach and the approach that uses SEDFlume data (i.e. SEDZLJ) to define erosion rates. Both approaches allow for cohesive and non-cohesive transport, with and without bedload. Hydrodynamic feedback of bed scour/deposition processes can optionally be used for morphologic analyses. EE has tools to assist the user in parameter setup including bed process calculators, guides and tooltips.
If sediment transport is being modeled, EE allows the user to simulate any number of toxic constituents. EFDC+ supports a variety of different sorption options for toxics modeling including 1,2 and 3 phase partitioning.
EE assists you when selecting these different options by providing a handy GUI to select the desired option.
Wind & Wave
EE supports the setup of both internal and external wave sub-models in EFDC+. When using internal waves EE automatically initializes the wave parameters and options with appropriate values.
When using the external wave option, EE has tools to assist the user importing into EFDC+ the wave results from third party wave models. If you are using SWAN, EE has a many SWAN specific tools to help build SWAN models and import SWAN model results.
If developing a water quality model, EE allows the user to optionally turn on a full sediment diagenesis and/or submerged aquatic vegetation (SAV). The SAV sub-model in EFDC+ is referred to as the Rooted Plant and Epiphyte Model (RPEM).
EFDC+ has hundreds of kinetic values and options that are required to be set for a full water quality model. When initialized, EE automatically assigns default values to facilitate the user in creating a new model quickly and easily. Once initialized, you can easily adjust these values as necessary during the calibration process.
Set atmospheric data series and surface/bed heat transfer parameters, as well as assigning the cell by cell weightings for multiple weather stations in the EE interface. Multiple surface heat exchange options are available to meet your project need, including a wide selection of evaporation options.
Heat coupled ice modeling can easily be used with the EE supplied default ice computation settings.