HR: 17:45h
AN: H24A-08 [Abstracts]
TI: An Integrated Surface Water and Groundwater Model of Fluid Flow and
Thermal, Salinity, Sediment and Reactive Biogeochemical Transport
AU: * Shan, H
EM: hshan@uta.edu
AF: University of Texas at Arlington, P.O. Box 19408, Arlington, TX 76019
United States
AU: Zhang, F
EM: fzhang@pegasus.cc.ucf.edu
AF: University of Central Florida, 4000 Central Florida Blvd, Orlando, FL 32816
United States
AU: Yeh, G
EM: gyeh@mail.ucf.edu
AF: University of Central Florida, 4000 Central Florida Blvd, Orlando, FL 32816
United States
AU: Hu, G
EM: ghu@sfwmd.gov
AF: South Florida Water Management District, 3301 Gun Club Road, West Palm Beach, FL 33406
United States
AU: Wu, T
EM: tien-shuenn.wu@dep.state.fl.us
AF: Florida Department of Environmental Protection, 2600 Blair Stone Road, MS 3555, Tallahassee, FL 32399
United States
AB:
This paper presents the development and application of an integrated surface water and groundwater model to simulate
hydrodynamics and thermal, salinity, sediment and reactive biogeochemical transport. The hydrodynamic module for tidal
waters solves three-dimensional Navier-Stokes equations with or without the hydrostatic assumptions. The Richards equation is
used to simulate the subsurface flow in both vadose and saturated zones. The Boussinesq approximation is employed to deal
with the buoyancy force due to temperature and salinity variations. The moving free surface is explicitly handled by solving
the kinematic boundary condition equation using a node-repositioning algorithm. The transport module solves the energy
equation for temperature distribution and a number of mass transport equations for the salinity, sediment, and solute fields.
The Arbitrary Lagrangian-Eulerian (ALE) representation is adopted for all transport equations including momentum transport.
The solution is obtained with finite element methods or a combination of finite element and Semi-Lagrangian (particle
tracking) methods. The model is applied to Loxahatchee Estuaries for the investigation of its minimum flow requirements to
maintain ecological balance.
DE: 4805 Biogeochemical cycles (1615)
DE: 4512 Currents
DE: 1831 Groundwater quality
DE: 1832 Groundwater transport
DE: 1871 Surface water quality
SC: Hydrology [H]
MN: 2004 AGU Fall Meeting