Determination of Unsaturated Soil Hydraulic Properties by Transient Flow Experiments and Parameter Estimation
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概要
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The numerical feasibility of determining soil water retention and hydraulic conductivity functions simultaneously from one-dimensional transient flow experiments in the laboratory by parameter estimation method is evaluated. Soil hydraulic properties are assumed to be represented by van Genuchten's closed-form expressions involving two unknown parameters: coefficients α and n . These parameters are evaluated by nonlinear least-squares fitting of predicted and observed pressure head with time. Gravity drainage experiments are performed for Toyoura standard sand to evaluate the adequacy of this proposed method.
- Faculty of Engineering, Okayama Universityの論文
- 1989-11-29
Faculty of Engineering, Okayama University | 論文
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