A high-performance workflow system for subsurface simulation

Freedman, Vicky L.; Finsterle, Stefan; Freshley, Mark D.; Gorton, Ian; Gosink, Luke; Keating, E. H.; Lansing, Carina; Moeglein, William A.; Murray, Christopher J L; Pau, George Shu Heng; Porter, Ellen A.; Purohit, Sumit; Rockhold, Mark; Schuchardt, Karen; Sivaramakrishnan, Chandrika; Vessilinov, Velimir V.; Waichler, Scott R.

doi:10.1016/j.envsoft.2014.01.030

Cited by 13 publications

(8 citation statements)

References 17 publications

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“…Additional information from more recent studies on clastic dikes is provided to update the knowledge base. Recent work at other Hanford locations suggests that grain size distribution and spectral gamma log data, which are available for the IDF site, may be used to generate more detailed and realistic models of subsurface heterogeneity (Freedman et al 2014). However, the use of such data for development of alternative conceptual models of the subsurface would be considered a PA maintenance activity.…”

Section: Discussionmentioning

confidence: 99%

“…Although Reidel (2005) did not attempt to do so, more-detailed interpretations of lithofacies and/or smaller-scale heterogeneities are possible using available core and high-resolution geophysical wire-line log data from IDF boreholes/wells, using methods such as those described by Last et al (2007) and Oostrom et al (2006). A facies-based modeling approach, similar to that described by Freedman et al (2014) and Last et al (2007), is currently being used for modeling subsurface flow and transport for the WMA-C (C Tank Farms). A similar approach could be considered for future IDF PA modeling to evaluate alternative conceptual models of the vadose zone.…”

Section: 21mentioning

confidence: 99%

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Physical, Hydraulic, and Transport Properties of Sediments and Engineered Materials Associated with Hanford Immobilized Low-Activity Waste

Rockhold¹,

Zhang²,

Meyer³

et al. 2015

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Current plans for treatment and disposal of immobilized low-activity waste (ILAW) from Hanford's underground waste storage tanks include vitrification and storage of the glass waste form in a near-surface disposal facility. This Integrated Disposal Facility (IDF) is located in the 200 East Area of the Hanford Central Plateau. Performance assessment (PA) of the IDF requires numerical modeling of subsurface flow and reactive transport processes over very long periods (thousands of years). The models used to predict facility performance require parameters describing various physical, hydraulic, and transport properties. This report provides updated estimates of physical, hydraulic, and transport properties and parameters for both near-and far-field materials, intended for use in future IDF PA modeling efforts. Previous work on physical and hydraulic property characterization for earlier IDF PA analyses is reviewed and summarized. For near-field materials, portions of this document and parameter estimates are taken from an earlier data package. For far-field materials, a critical review is provided of methodologies used in previous data packages. Alternative methods are described and associated parameters are provided. For far-field materials, consisting of both sand-and gravel-dominated facies underlying the IDF, a particular model has been used in previous PA modeling efforts to represent the saturation-dependent anisotropy of unsaturated hydraulic conductivity. We recommend that this model be replaced with a more recent and general tensorial pore-connectivity-tortuosity (TCT) model for saturation-dependent anisotropy. Simulation results from both the TCT and the earlier anisotropy model have been compared with observed data from a controlled vadose zone field injection experiment performed just south of the 200 East Area. The TCT model was shown to predict observed flow behavior at this site as well as or better than the model used in previous PA efforts, and with many fewer added model parameters (one versus eight). Recommended parameter estimates for the TCT model are presented. Previous estimates of dispersivities for vadose zone sediments were based on stochastic theory developed for saturated aquifer materials. An extensive literature review is presented that suggests these estimates may not be appropriate for unsaturated conditions. An alternative approach based on more fundamental physical property information is described and updated parameter estimates are presented.

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Section: Discussionmentioning

confidence: 99%

Section: 21mentioning

confidence: 99%

Physical, Hydraulic, and Transport Properties of Sediments and Engineered Materials Associated with Hanford Immobilized Low-Activity Waste

Rockhold¹,

Zhang²,

Meyer³

et al. 2015

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“…Our work is part of a project called Advanced Simulation Capability for Environmental Management (ASCEM) . One of the key features of ASCEM is the user environment, Akuna, which is a custom‐built interface for managing subsurface modeling workflows . Akuna provides users with a range of tools to utilize data with simulations, analyze data, translate conceptual models to numerical models, execute simulations, and visualize results.…”

Section: Application Drivermentioning

confidence: 99%

“…ASCEM has developed its own workflow system for subsurface modeling. The user interface to this workflow system is called Akuna . Here, we provide a brief overview of Akuna, and then describe the key feature of our data management tool that allows for a straightforward integration with the Akuna workflow engine.…”

Section: Integration With Distributed Workflowsmentioning

confidence: 99%

“…Features of the model setup tool include visualizing wells and lithologic contacts, generating surfaces or loading surfaces produced by other geologic modeling software and specifying material properties, initial and boundary conditions, and model output. Figure shows the architecture of the current implementation .…”

Section: Integration With Distributed Workflowsmentioning

confidence: 99%

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A science data gateway for environmental management

Agarwal

Faybishenko

Freedman

et al. 2015

Concurrency and Computation

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SUMMARYScience data gateways are effective in providing complex science data collections to the world-wide user communities. In this paper we describe a gateway for the Advanced Simulation Capability for Environmental Management (ASCEM) framework. Built on top of established web service technologies, the ASCEM data gateway is specifically designed for environmental modeling applications. Its key distinguishing features include (1) handling of complex spatiotemporal data, (2) offering a variety of selective data access mechanisms, (3) providing state-of-the-art plotting and visualization of spatiotemporal data records, and (4) integrating seamlessly with a distributed workflow system using a RESTful interface. ASCEM project scientists have been using this data gateway since 2011.

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GCE15 Special Issue Conference Publications

Olabarriaga

Wilkins‐Diehr

2015

Concurrency and Computation

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spatiotemporal model. ASCEM project scientists have been using this data gateway since 2011. The science gateway described by Kar [13] covers a different field, namely, 'risk communication', which is the exchange of information among stakeholders about an impending disaster and its risks to help individuals take appropriate actions to mitigate hazard impacts. The CIGIR GatewayCyberInfrastructure for GeoInformatics and Community Resilience -is a contributory citizen science project, with the goal of increasing public participation in emergency management, specifically, risk communication and community resilience building efforts of the Mississippi Gulf Coast residents. CIGIR aims at reducing rumors, as an alternative to social media, providing means for citizens to share data and information about a hazard, and participate in building community resilience. The paper describes the gateway's main functions: data collection and storage, data processing and query, data visualization, data and tools download, and user access. It concludes with a reflection about future challenges, for example, translating the gateway from proprietary to open software. EDITORIAL

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A high-performance workflow system for subsurface simulation

Cited by 13 publications

References 17 publications

Physical, Hydraulic, and Transport Properties of Sediments and Engineered Materials Associated with Hanford Immobilized Low-Activity Waste

Physical, Hydraulic, and Transport Properties of Sediments and Engineered Materials Associated with Hanford Immobilized Low-Activity Waste

A science data gateway for environmental management

GCE15 Special Issue Conference Publications

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