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Nodal failure index approach to groundwater remediation design / Jejung Lee in Journal of geotechnical and geoenvironmental engineering, Vol. 134 N°10 (Octobre 2008) 

Public ISBD [article]  in Journal of geotechnical and geoenvironmental engineering > Vol. 134 N°10 (Octobre 2008) . - pp. 1554–1557 Titre : Nodal failure index approach to groundwater remediation design Type de document : texte imprimé Auteurs : Jejung Lee, Auteur ; Howard W. Reeves, Auteur ; Charles H. Dowding, Auteur Année de publication : 2008 Article en page(s) : pp. 1554–1557 Note générale : Geotechnical and geoenvironmental engineering Langues : Anglais (eng) Mots-clés : Remedial  action  Groundwater  pollution  Uncertainty  principles  Computer  aided  simulation Résumé : Computer simulations often are used to design and to optimize groundwater remediation systems. We present a new computationally efficient approach that calculates the reliability of remedial design at every location in a model domain with a single simulation. The estimated reliability and other model information are used to select a best remedial option for given site conditions, conceptual model, and available data. To evaluate design performance, we introduce the nodal failure index (NFI) to determine the number of nodal locations at which the probability of success is below the design requirement. The strength of the NFI approach is that selected areas of interest can be specified for analysis and the best remedial design determined for this target region. An example application of the NFI approach using a hypothetical model shows how the spatial distribution of reliability can be used for a decision support system in groundwater remediation design. En ligne : http://ascelibrary.org/doi/abs/10.1061/%28ASCE%291090-0241%282008%29134%3A10%281 [...] [article] Nodal failure index approach to groundwater remediation design [texte imprimé] / Jejung Lee, Auteur ; Howard W. Reeves, Auteur ; Charles H. Dowding, Auteur . - 2008 . - pp. 1554–1557. Geotechnical and geoenvironmental engineering Langues : Anglais (eng) in Journal of geotechnical and geoenvironmental engineering > Vol. 134 N°10 (Octobre 2008) . - pp. 1554–1557 Mots-clés : Remedial  action  Groundwater  pollution  Uncertainty  principles  Computer  aided  simulation Résumé : Computer simulations often are used to design and to optimize groundwater remediation systems. We present a new computationally efficient approach that calculates the reliability of remedial design at every location in a model domain with a single simulation. The estimated reliability and other model information are used to select a best remedial option for given site conditions, conceptual model, and available data. To evaluate design performance, we introduce the nodal failure index (NFI) to determine the number of nodal locations at which the probability of success is below the design requirement. The strength of the NFI approach is that selected areas of interest can be specified for analysis and the best remedial design determined for this target region. An example application of the NFI approach using a hypothetical model shows how the spatial distribution of reliability can be used for a decision support system in groundwater remediation design. En ligne : http://ascelibrary.org/doi/abs/10.1061/%28ASCE%291090-0241%282008%29134%3A10%281 [...]