Uncertainty in dual permeability model parameters for structured soils

Uncertainty in dual permeability model parameters for structured soils.

Successful application of dual permeability models (DPM) to predict contaminant transport is contingent upon measured or inversely estimated soil hydraulic and solute transport parameters. The difficulty in unique identification of parameters for the additional macropore- and matrix-macropore interface regions, and knowledge about requisite experimental data for DPM has not been resolved to dat...

Estimation and upscaling of dual-permeability model parameters for the transport of E. coli D21g in soils with preferential flow.

Dual-permeability models are increasingly used to quantify the transport of solutes and microorganisms in soils with preferential flow. An ability to accurately determine the model parameters and their variation with preferential pathway characteristics is crucial for predicting the transport of microorganisms in the field. The dual-permeability model with optimized parameters was able to accur...

Permeability of Dual-Structured Porous Media

The effective permeability of dual-structured porous media has been determined through physical and numerical modeling. Example porous media consisting of a woven network of cylindrical bars overlaid by a network of spherical particles have been produced by a rapid prototyping technique. A glycerin-based solution, held in a pressurized reservoir, was forced through the porous samples. The resul...

A Binary-Medium Constitutive Model for Artificially Structured Soils

Analysis of Inverse Procedures for Estimating Parameters Controlling Macropore Flow and Solute Transport in the Dual-Permeability Model MACRO

the best simulation of the data giving the desired parameter set. The best-fit condition is reached by minimizing Because they are objective and reproducible, inverse modeling an objective function, which expresses the discrepancy procedures are increasingly used to identify model parameters that cannot be easily measured. This study investigated the feasibility of between the experimental data...