EFDC+ has added a robust Lagrangian Particle Tracking (LPT) sub-model allowing you to conduct mixing studies, track releases/discharges and simulate oil spills. Any number of particle groups (each with their own properties) with any number of particles for each group can be simulated. The LPT sub-model has two major computational options, one for tracking zero mass particles (traditional particle tracking approach) and another to use the LPT model for oil spill simulations.
Particle Tracking Simulations
EFDC+ allows the simulation of zero mass particles that are optionally constant at a fixed depth or fully 3D with optional settling/rise. The particle movement can be tied to EFDC+’s horizontal and/or vertical diffusivity coefficient or user specified diffusivity. Random walk option can also be added to the particle movements.
Oil Spill Modeling
EFDC+ allows the use of the LPT sub-model to simulate oil spills. With this option EFDC+ allows you to define a total release volume of oil and oil properties such as rise/fall velocities and loss terms such as evaporation and biodegradation. This powerful sub-model provides support in developing emergency response simulations, as well as analyzing fate and transport of historical spills.