Propeller Wash
Cleanup of contaminated sediment sites may include dredging, capping, or in-situ treatment, or a combination of these three techniques. Long-term stability of sediments is key to the success of these remedial actions…
Propeller Wash
Cleanup of contaminated sediment sites may include dredging, capping, or in-situ treatment, or a combination of these three techniques. Long-term stability of sediments is key to the success of these remedial actions…
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….
Eutrophication Studies
The US EPA describes nutrient pollution as “one of America’s most widespread, costly and challenging environmental problems.” This issue is of significant concern world-wide, with considerable resources now being committed in Asia and Europe to study eutrophication in streams, rivers, lakes, bays and coastal waters and related economic, environmental and human health issues.
Total Maximum Daily Load Studies (TMDL)
The need for detailed plans describing the restoration of impaired waters is widely recognized in developed countries. TMDL studies outline the maximum amount of a pollutant a body of water can receive without violating water quality standards, and an allocation of that amount to the pollutant’s sources. Determining the Wasteload Allocation, the portion of a receiving water’s assimilative capacity that is allocated to one of its existing or future point sources of pollution, is often required in a TMDL study. Numerical modeling is an indispensable component of these studies.
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?”
Generating Field Files for EFDC+ from External Data using Python
EFDC+ support input of spatially and temporally varying boundary conditions as field files, which means user can assign…
Coming Soon: Unlimited Phytoplankton and Zooplankton Modeling in EEMS
Following the release of EEMS10.2, the DSI Team is busy developing exciting new features for the next version of EEMS….
Webinar: Increasing the Performance of EFDC+ Models using Domain Decomposition
Join Mr. Paul Craig, the chief developer of EFDC+ and EEMS to learn how domain decomposition and MPI can help speed up your EFDC+ model.
Shellfish Farm Module in EEMS10.2
EEMS from version 10.2 onwards will include a Shellfish Farm Module. This module incorporates a modeling approach….
Implementation of Domain Decomposition in EFDC+ Using MPI
A primary function of EFDC+ is to solve the governing Partial Differential Equations (PDEs) for fluid flow and…
EFDC+ v10.2 MPI – Benchmark Test
The MPI implementation in EFDC+ offers a significant improvement in run time compared to the OMP versions of EFDC+.