Tissa H. Illangasekare 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:
- 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.
- 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.