Estimating parameters for van-Genuchten soil water retention curve model

Versione 1.0.0.0 (1,51 KB) da Sathyanarayan Rao
Matlab inbuilt 'nlinfit' is used to estimate van-Genuchten fitting parameters.
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Aggiornato 25 apr 2018

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Water retaining property of soil is characterized usually by van-Genuchten model in soil physics.
https://en.wikipedia.org/wiki/Water_retention_curve

In this function, I use 'nlinfit' to estimate alpha and n of this model, given some synthetic data (water potential and water content along with residual and saturated water content) . The code is generously commented for easy understanding. First a known soil parameter model is plotted and then synthetic experimental data is generated by erroring and downsampling the model and then we estimate the alpha and n.

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Sathyanarayan Rao (2024). Estimating parameters for van-Genuchten soil water retention curve model (https://www.mathworks.com/matlabcentral/fileexchange/67075-estimating-parameters-for-van-genuchten-soil-water-retention-curve-model), MATLAB Central File Exchange. Recuperato .

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1.0.0.0

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