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Accession Number DE2012-1034236
Title EMSL Pore Scale Modeling Challenge/Workshop.
Publication Date Aug 2011
Media Count 41p
Personal Author N/A
Abstract Report covers the background for the workshop, objectives, important research directions, necessary capabilities and overall recommendations. In the past decade, the development of field-scale predictive models of contaminant fate and transport has made exciting progress. Much of that progress results from greater understanding of the complexity of subsurface phenomena and the insights from new experimental and computational tools that provide molecular-level understanding of subsurface geochemistry and biogeochemistry. Increasingly, the expectation for models of contaminant transport in the subsurface is that they not only will offer accurate description of field observations but also have validated predictive capability. This expectation is held both by policy makers and remediation engineers, as well as research funding agencies. Even without considering spatial and temporal scalability, modeling contaminant transport at the field scale is complex and results in very sophisticated models being developed for specific field sites. Unfortunately, these models are not easily generalizable to other field sites or can only be used by the model developers to generate meaningful results. Over time, this results in the existence of numerous specialized models that are not readily comparable to each other and difficult to cross-validate. Phenomena observed at the field scale, such as contaminant or tracer arrival times at fixed locations, are controlled by processes at the molecular and pore scales, including contaminant absorption and reaction, porosity, pore connectivity, fluid mixing, etc. However, direct observation of pore-scale processes is not possible in the field. Several noninvasive imaging techniques have been developed that allow direct or spectroscopic observation of pore-scale processes within the laboratory framework. Weth et al. prepared a comprehensive review of the merits of these approaches as they apply to contaminant hydrogeology.
Keywords Absorption
Chemistry
Contaminants
EMSL(Environmental Molecular Sciences Laboratory)
Environmental Molecular Sciences Laboratory(EMSL)
Environmental sciences
Fabrication
Geochemistry
Laboratories
Meetings
Molecular biology
Nuclear magnetic resonance
Pore structure
Porosity
Research programs
Scale models
Simulation
Solutes
Substrates
Tomography

 
Source Agency Technical Information Center Oak Ridge Tennessee
NTIS Subject Category 68 - Environmental Pollution & Control
57F - Cytology, Genetics, & Molecular Biology
99 - Chemistry
70E - Research Program Administration & Technology Transfer
Corporate Author Pacific Northwest National Lab., Richland, WA.
Document Type Technical report
Title Note N/A
NTIS Issue Number 1310
Contract Number DE-AC05-76RL01830

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