Determining the Soil Water Characteristic Curve in Term of Van Genuchten Parameters by the Particle Swarm Optimization

Xu Yang; Xue Yi You; Min Ji

doi:10.4028/www.scientific.net/AMM.160.130

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 160Determining the Soil Water Characteristic Curve in...

Determining the Soil Water Characteristic Curve in Term of Van Genuchten Parameters by the Particle Swarm Optimization

Abstract:

The optimization effects of the particle swarm optimization (PSO) on the parameters of Van Genuchten (VG) equation for the soil water characteristic curve were investigated. The results indicated that the VG parameters determined by the PSO were very close to those of experiments with a very high accuracy. The PSO was proven to be used as an optimization method for estimating VG parameters for the soil water characteristic curve. The PSO had the higher parameter precision than the damped least squares method and the nonlinear simplex method. The particle swarm optimization was improved and its convergence accuracy was higher than that of constriction factor particle swarm optimization (CFPSO) and PSO of Filedsend.

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Periodical:

Applied Mechanics and Materials (Volume 160)

Pages:

130-134

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.160.130

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Online since:

March 2012

Authors:

Xu Yang, Xue Yi You, Min Ji

Keywords:

Particle Swarm Optimization Algorithm (PSO), Soil, Van Genuchten Equation, Water Characteristic Curve

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