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Analysis of Solute Transport in an Intermediate-Scale Unsaturated Flow Experiment

by G. Dagan, Tel Aviv Univ, Tel Aviv, Israel,
V. Nguyen, Tel Aviv Univ, Tel Aviv, Israel,
E. Springer, Tel Aviv Univ, Tel Aviv, Israel,



Document Type: Proceeding Paper

Part of: High Level Radioactive Waste Management 1991

Abstract:

A simplified stochastic model was derived and applied to two unsaturated flow experiments conducted in an intermediate-scale caisson. Parameters for the flow and transport models were derived independently using measurements obtained for the porous material and estimates of stochastic parameters from a saturated flow experiment conducted on the same caisson. Results revealed less variability in effluent mass concentration for the unsaturated case. This was attributed to differences in boundary conditions between the two cases and the lower variability in water content, which controls the variability of flow in the unsaturated case, as opposed to the saturated hydraulic conductivity, which controls flow variability in the saturated case.

Subject Headings: Unsaturated flow | Fluid flow | Stochastic processes | Flow measurement | Caissons | Water content | Radioactive wastes

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