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Type: Artigo de periódico
Title: Study Of Method To Avaliate Uncertaint In The Flow Simulation In Porous Media [estudo De Método Para Avaliação Da Incerteza Na Simulação De Fluxo Em Meios Porosos]
Author: Sewaybricker V.V.
Vidal A.C.
Abstract: The studied area has approximately 10300 m2 and its underground is characterized by a sandy-clay landfill that overlaps non consolidates sediments composed by portions of clay predominance and by parts with highest sand contents. A free aquifer flowing from south to north ruled by a hydraulic gradient of 1% has been identified. This research seeks to apply a probabilistic statistical method for assessing the impact of hydraulic conductivities heterogeneities, through the simulation of different feasible hydraulic conductivities scenarios in numerical simulation of flow and particles pathways. Hard data comprised field records of boreholes conducted for installation of 15 monitoring wells and 15 remediation wells. This information guided the construction of hydraulic conductivities distribution model. The geostatistical models results provided the data for the flow simulations. After the calibration of flow simulations particles pathways simulations were proceeded. The results for minimum and maximum particle traveling times were recorded and showed the different adopted scenarios influence, demonstrating that there is significant uncertainty regarding the modeling of flow in heterogeneous porous aquifers. Thus, it was verified that the studied method is an applicable tool for the analysis of uncertainty in the response of simulators, and can even be used in more complex models considering other variables than hydraulic conductivity.
Rights: fechado
Identifier DOI: 
Date Issue: 2011
Appears in Collections:Unicamp - Artigos e Outros Documentos

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