A preview of a DSI white paper comparing two approaches for simulating wind waves in EFDC+ — the internal SMB method and the external SWAN method — applied to the same wind-wave sediment-transport model of a sloped beach with offshore sandbars and rip channels.
A follow-up study on the ULTIMATE-QUICKEST advective transport scheme in EFDC+, evaluating its computational efficiency against the original upwind differencing across several real-world model applications.
A 3D EFDC+ simulation showing how propeller wash from passing ships breaks up a 100 ppt hypersaline bottom layer in a navigation canal.
EEMS 12.5 introduces the ULTIMATE-QUICKEST scheme for advective transport in EFDC+, using quadratic interpolation to achieve third-order accuracy and reduce numerical diffusion while maintaining numerical stability.
A case study on the Lower St. Johns River Estuary demonstrating how EFDC+ and EEMS can model long-term salinity intrusion and translate modeled salinity patterns into actionable habitat indicators.
This blog extends cyanobacteria vertical migration modeling to a fully three-dimensional model of Lake Mendota, comparing Constant Velocity and Dynamic Velocity approaches.
Learn how EFDC+ modeling helps understand salmon migration challenges through the Ballard Locks by simulating complex temperature and salinity dynamics in Lake Washington Ship Canal.
Lake Mendota, the largest lake in Madison, Wisconsin, exhibits complex thermal dynamics with pronounced summer stratification and reverse winter stratification under ice cover.
DSI developed a three-dimensional water quality model using EEMS to generate predictions of eutrophic characteristics, including dissolved oxygen levels, algal concentrations, and nutrient rates.
EFDC+ now employs parallel processing capabilities using MPI combined with OpenMP, significantly accelerating model simulations.
Hanoi, Vietnam's second-largest city, lies in the Red River Delta, a region prone to heavy rainfall and flooding, with risks exacerbated by climate change
Our previous blog introduced the heat-coupled ice model implemented in EEMS. We also demonstrated its capabilities through a simulation of ice formation and melting in Lake Mendota
Hanoi, Vietnam's second-largest city, lies in the Red River Delta, a region prone to heavy rainfall and flooding, with risks exacerbated by climate change
Accurately simulating seasonal ice cover is crucial for understanding the hydrodynamics, primary production, and water quality of lake systems.
Sediment transport in open channel flows is influenced by turbulence, which governs the distribution of momentum and sediment throughout the water column.
The Lagrangian Particle Tracking (LPT) module in EFDC+ was developed by DSI in 2009 and has served as an effective tool for solving numerous problems in fluid dynamics.
In our previous blog, we provided an overview of simulating hydraulic structures in EEMS, where we discussed the importance of rating tables and flow lookup tables in determining flow rates based on water surface elevations.
In a recent blog, we provided an overview of simulating hydraulic structures in EEMS. As a continuation, this blog details the rating table/flow lookup table to help users understand the nuanced dynamics of hydraulic structure simulations
Different Types of Open Boundaries and When to Use Them Understanding and effectively utilizing open boundaries is crucial for accurate modeling and simulation in environmental and coastal engineering.
Simulating hydraulic structures in hydrological and hydraulic calculations is crucial for ensuring the accuracy, safety, and sustainability of water resource management and infrastructure development projects
When simulating chemical fate and transport, volatile chemicals at the air-water interface frequently off-gas from the water into the atmosphere.
A new vertical layering option following the Sigma-Zed (SGZ) approach has recently been added to EEMS. The new SGZ scheme offers significant flexibility in configuring the vertical layering system
Several significant enhancements have been made to the temperature module settings in EEMS 12.1. These changes to the user interface reflect new modules in EFDC+ and facilitate a more efficient workflow
Following the implementation of COARE 3.6 in the EFDC+ code, a new option for calculating water surface heat exchange has been added.
Following the implementation of COARE 3.6 in the EFDC+ code, a new option for calculating water surface heat exchange has been added.
In the previous blog, we were introduced to the newly incorporated geographic coordinate system in EEMS12.0
EEMS has a feature that allows users to extract flow flux through a flux line (a cross-section) and compare the extracted flow to the measured flow.
A lock is a hydraulic structure employed to facilitate the movement of boats, ships, and similar watercraft between different water levels on rivers and canals.
The Coupled Ocean-Atmosphere Response Experiment (COARE) bulk algorithm, developed by C. Fairall, E. F. Bradley, and D. Rogers
Starting from EEMS version 12, users have the flexibility to construct models using turbulence closures sourced from GOTM