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Research
Research Group
Collaborator Researchers through Subcontract
- Hua Shan, Assistant Professor, Math Department, University of Texas at Arlington
- Jin-Ping Gwo, Assistant Professor, Civil Engineering Dept., University of Maryland at Baltimore County
Ph.D. Students
- Guobiao Hunag: Watershed Hydraulic and Hydrologic Modeling
- Fan Zhang: A New Paradigm of Modeling Watershed Water Quality.
- Ying Yu: Modeling Water Quality in Surface Waters.
M. S. Students
- Chun-Wen Chen: Modeling Bioreduction of Hematite-Coated Sand in Batch and Column Experiments.
- Sandeep Paladagu: Recharges in Wekia Springshed.
Visiting Scholars
- Jae Young Lee: Watershed Modeling and Watershed Management.
- Maria Franklin: Reactive Biogeochemical Transport in Subsurface Media.
Primary Research Interests
- Developing innovative numerical algorithms for problems of moving sharp-fronts;
- Watershed modeling;
- Geochemical kinetic and geochemical equilibrium modeling;
- Coupled hydrologic transport and biogeochemical reactions;
- Multiphase flow and contaminant transport;
- Bay/estuary hydrodynamics and sediment and water quality transport;
- Computational fluid dynamics;
- Coupled surface and subsurface flow and transport processes.
Specific Research Topics
Research Accomplishments
- Developed over 90 computational numerical models and algorithms.
- A pair of finite element models, FEMWATER and FEMWASTE, on flow and contaminant transport in saturated-unsaturated media was adopted by US NRC as the de facto standard for analyzing the miration of shallow land buried low level wastes.
- AT123D, an analytical, transient, one-, two-, and three-dimensional contaminant transport model, was endorsed by the Office of Toxic Substances, U. S. Environmental Protection Agency (EPA) and has perhaps been the most widely used analytical model by industries.
- 3DFEMWATER and 3DLEWASTE, three-dimensional version of FEMWATER and LEWASTE, have been proposed by US EPA as the core groundwater analysis program for the National Well Head Protection Program.
- 3DFEMFAT, a three-dimensional finite element density-dependent flow and transport model has been incorporated into US Army Corps' groundwater modeling systems (GMS-FEMWATER) for the assessment of the Army pollution sites.
- HYDROGEOCHEM, a true reactive chemical transport model, has been used all over the world to design and interpret both laboratory and field experiments.
- 2DFATMIC and 3DFATMIC, a pair of density dependent flow and fate and transport models of microbes and chemicals in 2-D and 3-D space, respectively, have been endorsed by US EPA for assessing and investigating bioremediation.
- KEMOD, a mixed geochemical equilibrium and geochemical kinetic model, has been adopted by many federal agencies for the investigation of geochemical reactions. This model has been proposed by Groundwater Challenge Application as the core module to handle geochemistry in their development of a parallel groundwater contaminant transport code.
- HYDROGEOCHEM 5.0, the latest version HYDROGEOCHEM, has been proposed as a standard protocol to simulate multi-scales, muti-processes, reactive biochemical transport at field research sites by National Laboratories and Universities.
- WASH123D, A Numerical Model to Simulate Water Flow and Contaminant and Sediment Transport in WAterSHed Systems of 1-D Stream-River Network, 2-D Overland Regime, and 3-D Subsurface Media, has been chosen and endorsed by US EPA and US Army Corps as a tool for watershed management and simulations when mechanistic-based approaches have to be used.
- BEST3D, A Numerical, Bay/Estuarine Model to Simulate Hydrodynamics and Salinity, Thermal, Sediment and Water Quality Transport in 3 Dimensions, has been chosen by SFWMD and FDEP for investigating minimum flow and TMDL modeling.
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