H047
Accounting for Heterogeneity and Uncertainty in Reactive Transport Processes

Session ID#: 161136

Session Description:
Chemical reactions are often highly nonlinear and kinetically-controlled.  Because of this, small fluctuations from mean concentrations can drive overall reaction rates and lead to areas of accelerated production (hot spots).   Many models of reactive transport processes in natural settings, including crustal, surface and subsurface freshwater, oceans, and the atmosphere, are often based on idealized or homogenized conceptual models.  Fluctuations below the level of homogenization (i.e., the sub-grid) are often ignored, as this type of simplifications is often necessary to close the system of equations but are in stark contrast to reality. Natural flow systems involve multi-scale, evolving heterogeneity structures, and chemical heterogeneities that are challenging to adequately describe using sparse data.  This session explores progress, challenges, and recent successes in characterizing, describing, and modeling heterogeneities across all scales, and the tradeoffs between parsimony and uncertainty. We welcome contributions involving field data, numerical simulations, and novel theoretical models for flow, transport, and reaction processes. Presenters are strongly encouraged to include examples or case studies that involve realistic heterogeneities and to offer guidance regarding how to deal with heterogeneity and uncertainty in their chosen setting.
Co-Organized:
  • A - Atmospheric Sciences
Index Terms:

0305 Aerosols and particles [ATMOSPHERIC COMPOSITION AND STRUCTURE]
0412 Biogeochemical kinetics and reaction modeling [BIOGEOSCIENCES]
1009 Geochemical modeling [GEOCHEMISTRY]
1806 Chemistry of fresh water [HYDROLOGY]

Primary Convener:  David Andrew Benson, Colorado School of Mines, Hydrologic Science and Engineering, Golden, CO, United States
Conveners:  Michael Schmidt, Sandia National Laboratories, Albuquerque, NM, United States and Nick Engdahl, Washington State University, Civil and Environmental Engineering, Pullman, WA, United States
Student/Early Career Convener:  Michael Schmidt, Sandia National Laboratories, Albuquerque, NM, United States
 
Can we borrow quantum-like mathematics to model highly uncertain continuum mechanical systems? (1043305)
Nick Engdahl, Washington State University, Civil and Environmental Engineering, Pullman, WA, United States
 
Imidacloprid Transport Processes in Florida Sandy Soils Under Saturated Conditions. (1049655)
Qudus Uthman, University of Florida, Soil, Water, and Ecosystem Sciences, Gainesville, United States, Davie M Kadyampakeni, University of Florida, Soil, Water, and Ecosystem Sciences, Lake Alfred, United States, Rafael Munoz-Carpena, University of Florida (Visiting Professor at Public University of Navarra, Spain), Agricultural and Biological Engineering, Gainesville, FL, United States, Jinsheng Huang, University of Florida, Department of Agricultural and Biological Engineering, Gainesville, United States and Bin Gao, University of Florida, Department of Agricultural and Biological Engineering, Gainesville, FL, United States
 
Flow Heterogeneity Controls Geologic Dissolution Hotspots in Porous Media (1052437)
Zoe Kanavas, University of California Davis, Civil and Environmental Engineering, Davis, CA, United States, Joaquin Jimenez-Martinez, ETH Swiss Federal Institute of Technology Zurich, Zurich, Switzerland and Veronica L Morales, University of California, Davis, Civil and Environmental Engineering, Davis, United States
 
Contribution of the Reactive Transport Modelling in Porous Fractured Media to the Understanding of Weathering Processes (1065718)
Sylvain Favier, Yoram Teitler, Fabrice Golfier and Michel Cathelineau, Université de Lorraine, CNRS, GeoRessources, Vandoeuvre-les-Nancy, France
 
Auto-detecting adaptive hybrid method for reactive transport in porous media (1068226)
Yinuo Yao, Stanford University, Stanford, CA, United States and Ilenia Battiato, Stanford University, Energy Resources Engineering, Stanford, CA, United States
 
3D Fluid Deformation Dynamics of a Mixing Front: Looking at Concentration Isosurfaces of a Solute in a Pore-scale Geometry (1082529)
Daniel Metanias Carvalho Hallack1, Diogo Bolster1, Guillem Sole-Mari2 and Saif Farhat1, (1)University of Notre Dame, Civil and Environmental Engineering and Earth Sciences, Notre Dame, United States, (2)Lawrence Berkeley National Laboratory, Berkeley, CA, United States
 
Newton Trust-Region Applied to Porous Media Flow and Reactive Transport (1131108)
Heeho Park, Sandia National Laboratories, Applied Systems Analysis & Research, Albuquerque, United States, Glenn Hammond, Pacific Northwest National Laboratory, Richland, United States and Albert J Valocchi, University of Illinois at Urbana-Champaign, Urbana, IL, United States
 
Determination of How Sediment Heterogeneity control Fickian to non-Fickian Dispersion With Flow rate – A Laboratory Approach (1155557)
Victor Obi and Kuldeep Singh, Kent State University Kent Campus, Kent, OH, United States
 
Spatiotemporal Variability of Saturated Hydraulic Conductivity Evident across Agricultural Management Strategies (1156511)
Peter O'Brien and Thanos Papanicolaou, USDA -ARS, National Lab for Agriculture and the Environment, Ames, United States
See more of: Hydrology
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