ALGE is 3-dimensional, time-dependent, hydrodynamic code that was developed specifically to interpret and analyze remote sensing data, particularly thermal imagery. ALGE uses finite difference techniques to solve the hydrostatic form of the partial differential equations that model conservation of momentum, mass and thermal energy. ALGE also solves the two-dimensional system of equations that allows the movement of a free water surface to be simulated and predicted. The partial differential equation that models the transport, diffusion and deposition of particles is also solved. ALGE has simulated cooling lakes, thermal discharge to rivers, tidally driven currents in bays and estuaries and thermal discharge to the ocean. Subroutines can be called that compute the amount of heat entering or leaving a body of water due to evaporation, convection, solar radiation absorption and thermal radiation flux divergence. Turbulence is modeled with a Level 2.5 Yamada closure model. ALGE can perform simulations with highly variable land-water boundaries and water depths. Mass sources and sinks can easily be inserted into the computational domain to simulate man made thermal discharges. ALGE has been verified with data from Savannah River Site cooling lakes and thermal discharges to the Savannah River, tide data from Delaware Bay and other bays, and cooling lake and ocean discharge data from classified sources. The verification work shows that the ALGE code reproduces both the surface and subsurface temperature distributions in cooling lakes and discharges to bays and the ocean. A description of the ALGE code and verification against cooling lake data has been published in the open literature. Several classified reports on applications of ALGE have also been published.
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@misc{osti_1230433,
title = {ALGE, Version 00},
author = {Garrett, Alfred J.},
abstractNote = {ALGE is 3-dimensional, time-dependent, hydrodynamic code that was developed specifically to interpret and analyze remote sensing data, particularly thermal imagery. ALGE uses finite difference techniques to solve the hydrostatic form of the partial differential equations that model conservation of momentum, mass and thermal energy. ALGE also solves the two-dimensional system of equations that allows the movement of a free water surface to be simulated and predicted. The partial differential equation that models the transport, diffusion and deposition of particles is also solved. ALGE has simulated cooling lakes, thermal discharge to rivers, tidally driven currents in bays and estuaries and thermal discharge to the ocean. Subroutines can be called that compute the amount of heat entering or leaving a body of water due to evaporation, convection, solar radiation absorption and thermal radiation flux divergence. Turbulence is modeled with a Level 2.5 Yamada closure model. ALGE can perform simulations with highly variable land-water boundaries and water depths. Mass sources and sinks can easily be inserted into the computational domain to simulate man made thermal discharges. ALGE has been verified with data from Savannah River Site cooling lakes and thermal discharges to the Savannah River, tide data from Delaware Bay and other bays, and cooling lake and ocean discharge data from classified sources. The verification work shows that the ALGE code reproduces both the surface and subsurface temperature distributions in cooling lakes and discharges to bays and the ocean. A description of the ALGE code and verification against cooling lake data has been published in the open literature. Several classified reports on applications of ALGE have also been published.},
doi = {},
url = {https://www.osti.gov/biblio/1230433},
year = {Thu Jul 09 00:00:00 EDT 1998},
month = {Thu Jul 09 00:00:00 EDT 1998},
note =
}
