Coupling HSPF Water Quality Model with EFDC+
Kingston Ferry Terminal Propwash Simulation Sediment erosion caused by propeller wash from ships is of considerable…
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Kingston Ferry Terminal Propwash Simulation
Kingston Ferry Terminal Propwash Simulation Sediment erosion caused by propeller wash from ships is of considerable…
Lake Washington Real-Time Model
BACK Lake Washington Real-Time Model DSI recently developed a real-time model for Lake Washington, along with a public-access model portal. The portal allows users to view historical and current data on measured and simulated water levels, temperature, and velocity, presented in map view, time series, and vertical profiles. Users can also compare the data with…
JSON Formatted Files in EEMS
BACK JSON Formatted Files in EEMS JSON (JavaScript Object Notation) is an increasingly common standard data format to store and transmit data objects that use text designed to be easily read by humans. JSON serves as a syntax for serializing objects, arrays, numbers, strings, booleans, and null. Although it is based upon JavaScript syntax, it…
Enhancements to the EEMS GUI
BACK Enhancements to the EEMS GUI As we added new features to EFDC+, our Graphical User Interface (GUI), EFDC_Explorer (EE) has also changed to support these new features and capabilities. In this post, we describe three major changes in the GUI. Water Quality Interface With EFDC+’s new ability to simulate unlimited algal, macrophyte, periphyton, and…
Modeling Interaction Between Phytoplankton and Zooplankton in EEMS
BACK Modeling Interaction Between Phytoplankton and Zooplankton in EEMS Introduction Zooplankton population modeling is a significant new feature in the recently released version of EFDC_Explorer Modeling System (EEMS 10.3). Built as a sub-module of the Water Quality module, the new zooplankton feature is a first step toward modeling the effects of eutrophication on higher-level predators.…
Transforming Node Time Series Model Result to EE Field File
There can be multiple reasons when a modeler needs to incorporate results from another model. It can be the lack of direct measurement of specific properties or…
Testing EFDC+ Propeller Wash Module with Sediment Transport Process
This post introduces a simple testing process to demonstrate how the propeller wash module works with EFDC+’s sediment transport process modeling features.
NetCDF-CF and UGRID Formats
The Network Common Data Form (NetCDF) data format was originally intended to create, access, and share array-oriented data in a form that is self-describing and portable…
Creating Great Animations in EEMS
Communicating your modeling results to a wide variety of audience is as important as developing a good model. Animating the processes is one of the most powerful ways in which a modeler…
Simulating Wind-Induced Waves in EEMS
Wind-induced waves affect the propagation of gravity waves. Wave modeling hindcast is a critical step for wave energy development and…
Simulating Biota in EFDC+
Water quality simulation in waterbodies involves the biochemical transformation of the nutrients, their movement through several water layers….
Velocity Profile of a Propeller moving through a Channel
In this post, we would like to demonstrate how the propeller transfers the energy to the water column causing sediment resuspension.
Propeller Wash Simulation Using Historical Ship Track Data
Simulation of the impacts of propeller wash in hydrodynamic and sediment transport models requires detailed information on ship travel routes and the physical characteristics of each ship.
The Importance of Propeller Wash Modeling
Many urban waterfronts are contaminated with metals, petroleum hydrocarbons, and other organic chemicals. The contamination could be as much as 20 feet…
Modeling Climate Change Impacts Using EE
Climate change is an accepted reality, so most infrastructure development and maintenance will require the evaluation of possible impacts of climate change.
Modeling Sediment Resuspension in a Coastal Environment Due to Ship Traffic
Sediment resuspension occurs in harbors across the world as a function of propeller-induced water velocities, and resulting shear stress, at the sediment-water interface. While such events occur with….
Simulation of Manatee Habitat with EEMS
The warm waters and shallow, vegetated waterways of the Gulf of Mexico provide valuable habitat to a diverse range of plants and animals….
EFDC+ with Hydrologic Simulation Program-Fortran (HSPF)
As part of DSI’s committment to the scientific and modeling community, DSI is now providing a template script that modelers can use to run an HSPF model, process the output, run the EFDC+ model, and plot the output.
Fortran – A Language for Engineering and Scientific Computing
With so many new computer languages available today, a question often asked is, “Why is EFDC+ coded in Fortran language?”