Tissa H. Illangasekare Research Interests

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Tissa H. Illangasekare Research Interests

Research Interests

My primary research interests and experience are in the areas of water flow, and fate and transport of chemicals through porous and fractured media. Recently I have developed research interests in water management in regions affected by the South Asian tsunami. I have conducted experimental, field and numerical modeling work related to this research. A partial list of my past and current funded research projects is given here to show my diversity of interests and multi-disciplinary nature of problems I have worked on:

Water Resources

  • Incorporation of Salinity Quality into a Hydrologic Modeling Designed for Day-by-Day Regulation of Conjunctive Use of a Surface-Ground Waters, U.S. Department of Interior.
  • Daily Operational Tool for Maximum Beneficial Use of Management of Surface and Ground Waters in a Basin, U.S. Department of Interior.
  • Integrated Management of Surface and Groundwater Resources from a Quantity and Quality Point of View, Ministry of Agriculture and Water, Saudi Arabia.
  • Planning and Management Alternatives for Future Water Policy Formulation in Colorado, Colorado Commission on Higher Education.
  • Simulation for Management of Large Surface Groundwater Systems - Engineering Super Computer Grants, National Science Foundation.
  • Development and Laboratory Verification of Models of Surface-Subsurface Water Quality Interaction, US Dept. of Interior.
  • Study Near-Surface Unsaturated Zone Processes Associated With Land-Atmospheric Interactions, Dept of Defense
  • Assessment of tsunami impacts on coastal aquifers in Sri Lanka, National Science Foundation

Fate and transport

  • In Situ Enhanced Biogas Production From Coal: Modeling, Model Validation And Up-Scaling
  • Vapor Intrusion From Entrapped NAPL Sources and Groundwater Plumes – Process Understanding and Improved Modeling Tools for Pathway Assessment
  • Virtual Sensor Network Based Closed-Loop Integrated System for Continuous Plume Monitoring and Prediction
  • A Virtual Sensor Network Based Closed-Loop Integrated System for Continuous Plume Monitoring and Prediction
  • A Groundwater Model for Pre-operational and Post-operational Management of Lignite Mining, U.S. Department of Interior.
  • Transport of Concentrated Organics in the Unsaturated and Saturated Zones Below Spill and Dump Sites, U.S. Environmental Protection Agency.
  • Distribution and recovery of refinery waste products in aquifers, U.S. Environmental Protection Agency.
  • Virus Transport in Groundwater, National Water Research Institute.
  • Modeling of the Vadose zone Soil of Rocky Flats Plant Site, US DOE.
  • Development and experimental verification of theories for up-scaling of water flow and solute transport in saturated porous media. US Army Water Ways Experimental Station.
  • Extension of laboratory validated treatment and remediation technologies to field problems in aquifer soil and water, US EPA.
  • An experimental data base for the evaluation of theories of upscaling in modeling of groundwater flow, solute transport and multiphase flow in aquifers, US Army Resh. Office.
  • Bioavailability and biostabilization of multicomponent NAPLs in the subsurface, NSF/EPA/DOE/ONL.
  • Upscaling of flow and transport of de-icing compounds and JP-8 organic constituenst under conditions of biostability, US Air Force Center for Scientific Research.
  • Non-aqueous phase waste chemicals in the subsurface: site characterization and remediation, US EPA.
  • Mass transfer from entrapped gasoline investigation; Chevron
  • Development of a three-dimensional test-bed facility; NSF.
  • Interdisciplinary graduate program for computational subsurface transport (GANN), Dept. of Education.
  • Quantifying sit-scale processes and watershed-scale cumulative effects of decentralized wastewater systems; US EPA.
  • Hydrocarbons in soils; end-point evaluation and comparison of remediation technologies; Union Pacific Railroad.
  • Fundamental evaluation of tracer techniques for the determination of retention volumes of NAPL in heterogeneous aquifers, National Science Foundation
  • Mass transfer from entrapped DNAPL sources undergoing remediation: characterization methods and prediction tools, Depart of Defense through SERDP.
  • Reaction and transport processes controlling in situ chemical oxidation of DNAPLs, Depart of Defense through SERDP.
  • Technical Protocol for Evaluating Effects of Source Zone Remediation on Groundwater Quality and Source Longevity, Air Force Center for Environmental Excellence (AFCEE).
  • Various laboratory investigations to evaluate vegetable oil as an organic substrate to simulate reductive decholorination of chlorinated organic compounds, Air Force through Parson Environmental
  • Numerical and experimental validation of subsurface contamination problems involving multiphase volatile chlorinated solvents, National Science Foundation.
  • Development Of Systematic Approaches For Calibration Of Subsurface Transport Models Using Hard And Soft Data On System Characteristics And Behavior., Army Research Office
  • Wireless Sensor Networking for Model Calibration for Plume Monitoring, Risk Prediction and Remediation, Army Research Office
  • Fundamental study of the delivery of nanoiron to DNAPL source zones in naturally heterogeneous field systems, Depart of Defense through SERDP
  • Development and Validation of Porous Media Flow and Transport Models for Subsurface Environmental Application- collaboration, Czeck Republic.

Fracture Flow

  • Development and Experimental Verification of Models for Estimation of Uplift Water Pressures in Cracks in Dams, Electric Power Research Institute.
  • The influence of rock discontinuities on uplift and stability of concrete dams, Electric Power Research Institute.
  • Evaluation of a foundation drainage system for the left thrust block of cabinet gorge dam, Washington Water Power

Water Flow in Snow

  • Reduced uncertainty in projection of future sea-level change due to ice wastage, U.S. Department of Energy.
  • Field, laboratory and modeling studies of water infiltration and runoff in subfreezing snow on regional scales to estimate future greenhouse induced changes in seal-level, U.S. Department of Energy.
  • Meltwater flow through snow from plot to basin scales, National Science Foundation.

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