EFDC+ Explorer (formerly EFDC_Explorer) (EE) is a Windows-based GUI for pre- and post processing of the Environmental Fluid Dynamics Code (EFDC). The program is developed and supported by the engineering company DSI. EFDC+ Explorer is designed to support model set-up, grid generation (Cartesian and orthogonal curvilinear), testing, calibration, and visualization of model results (Craig, 2020). EE supports hydrodynamics, sediment/toxics transport, particle tracking and the coupled water quality model HEM3D. EFDC was originally developed at Virginia Institute of Marine Science (Hamrick, 1992). It is

open-source software Open-source software (OSS) is Software, computer software that is released under a Open-source license, license in which the copyright holder grants users the rights to use, study, change, and Software distribution, distribute the software an ...

and is a widely used, EPA accepted model. DSI continues to develop EFDC using the name EFDC+. Enhancements include adding multithreading capability and more recently full

parallel computing Parallel computing is a type of computing, computation in which many calculations or Process (computing), processes are carried out simultaneously. Large problems can often be divided into smaller ones, which can then be solved at the same time. ...

with MPI (Message Passing Interface). EFDC+ Explorer is part of the EE Modeling System (EEMS) which includes EFDC+, the enhanced version of EFDC, and Grid+, a curvilinear Cartesian grid generator, which replaces the earlier CVLGrid. A plugin for US EPA's watershed management and TMDL development tool
BASINS
was recently developed. This allows BASINS to create EFDC+ models.

EFDC+/EFDC+ Explorer Functions

*EFDC Pre- & Post-Processing *2D & 3D Animations *Model Results Visualization *Data vs. Model Comparisons *

Real-time data Real-time data (RTD) is information that is delivered immediately after collection. There is no delay in the timeliness of the information provided. Real-time data is often used for navigation or tracking. Such data is usually data processing, proc ...

processing and simulation Simulation of: *

Hydrodynamics In physics, physical chemistry and engineering, fluid dynamics is a subdiscipline of fluid mechanics that describes the flow of fluids – liquids and gases. It has several subdisciplines, including (the study of air and other gases in ...

Sediment transport Sediment transport is the movement of solid particles (sediment), typically due to a combination of gravity acting on the sediment, and the movement of the fluid in which the sediment is entrained. Sediment transport occurs in natural systems wh ...

*Chemical fate & transport *

Water quality Water quality refers to the chemical, physical, and biological characteristics of water based on the standards of its usage. It is most frequently used by reference to a set of standards against which compliance, generally achieved through tr ...

* Shellfish farms * Wave impacts and wind wave generation * Lagrangian Particle Tracking *Ice Formation and Melt * Marine Hydrokinetics *Habitat analysis usin
Instream Flow Incremental Method
*Propeller Wash

Example applications

EFDC+ Explorer has been in distribution since 2003, and is now being used in over 60 countries.

Newtown Creek Newtown Creek, a long tributary of the East River, is an estuary that forms part of the border between the boroughs of Brooklyn and Queens, in New York City. River engineering#Channelization, Channelization made it one of the most heavily-use ...

, New York City: Newtown Creek was proposed as a potential

Superfund Superfund is a United States federal environmental remediation program established by the Comprehensive Environmental Response, Compensation, and Liability Act of 1980 (CERCLA). The program is administered by the United States Environmental Pro ...

site in September 2009, and received that designation on September 27, 2010. EFDC and EFDC+ Explorer are being used to support the remedial investigation and feasibility study to prepare for environmental remediation.

Ohio River The Ohio River () is a river in the United States. It is located at the boundary of the Midwestern and Southern United States, flowing in a southwesterly direction from Pittsburgh, Pennsylvania, to its river mouth, mouth on the Mississippi Riv ...

, USA: "This model of the Ohio River was designed to assist in a storm impacts study for Cincinnati City. The study related to the evaluation of combined sewer overflows (CSOs) and other wet weather impacts on the water quality on the Ohio River, and to evaluate resulting benefits from certain abatement scenarios."

Lake Washington Lake Washington () is a large freshwater lake adjacent to the city of Seattle, Washington, United States. It is the largest lake in King County, Washington, King County and the second largest natural lake in the state of Washington (state), Was ...

, WA, "DSI has developed the Lake Washington Real-time Temperature Simulation as an example of a real-time data and modeling facility to serve the scientific community in Seattle, Washington, US."Lake Washington Real-time Temperature Simulatio
http://westlake.ds-intl.biz/
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References

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External links

Environmental Protection Agency EFDC

EFDC+ Explorer Modeling System Website

EFDC+ Explorer Knowledge BaseEFDC+ Theory GuideLake Washington Real-time Temperature Simulation
Simulation software