Model Fitting for Determining the Parameter of the Pore Size Distribution

Research Output

The computation of the SWCC requires prior estimation of the pore-size distribution (POSD) which is computed from the PSD. The process described in detail by [1-3]. It needs a value of a which is a model parameter related to particle shape and orientation. On the basis of previous empirical data, the work by [4-6] suggests 1.3≤α≤1.5, while [1, 2] used 1.35≤α≤1.39 for a smaller number of soil types. In this work our SWCC data measured on fractal sand mixtures were used. The Van Genuchten model was fitted then inverted [7-8], to have suction for a given water content. Then Least Squares fitting was made for the alpha, which had a smaller value around 1. The difference was tentatively explained by the fact that the measured data also deviated from the general measured SWCC-s, were shifted on the suction axis.

Date:

21 November 2023
Publication Status:

Published
Funders:

Edinburgh Napier Funded

http://researchrepository.napier.ac.uk/output/3597257 <p>Imre, E., Mwinken, D. K., & Barreto, D. (2023). Model Fitting for Determining the Parameter of the Pore Size Distribution. In <i>Book of Abstracts from 9th International Scientific Conference on Advances in Mechanical Engineering</i> (43)</p>

Citation

Imre, E., Mwinken, D. K., & Barreto, D. (2023). Model Fitting for Determining the Parameter of the Pore Size Distribution. In Book of Abstracts from 9th International Scientific Conference on Advances in Mechanical Engineering (43)