Theses and Dissertations
Issuing Body
Mississippi State University
Advisor
Vahedifard, Farshid
Committee Member
Peters, John F.
Committee Member
Avila, John Ramirez
Date of Degree
12-8-2017
Document Type
Graduate Thesis - Open Access
Major
Civil Engineering
Degree Name
Master of Science
College
James Worth Bagley College of Engineering
Department
Department of Civil and Environmental Engineering
Abstract
The Soil Water Retention Curve (SWRC) is a key constitutive relationship describing the behavior of variably saturated soils. The objective of this research is to assess the performance of a hydro-mechanical model, developed by coupling the lattice Boltzmann method (LBM) with the discrete element method (DEM), for micromechanical simulation of the SWRC. The DEM-LBM model is used to examine the effects of wave propagation on fluid-solid interaction. A multi-phase LBM is then employed within a static particle array generated by the DEM to examine the effects of initial fluid density distribution. The SWRCs are generated by recording the liquid pore pressure and the degree of saturation within a porous medium subjected to imbibition for two cases: randomized fluid density simulation (non-unified wetting front) and droplet simulation (unified wetting front). The coupled DEM-multiphase LBM model is shown to be a promising tool to characterize capillary regime in partially saturated porous media.
URI
https://hdl.handle.net/11668/18906
Recommended Citation
Fili, Jonathan Frank, "Micromechanical Modeling of the Soil Water Retention Curve using a Coupled Discrete Element-Lattice Boltzmann Method" (2017). Theses and Dissertations. 3090.
https://scholarsjunction.msstate.edu/td/3090
Comments
SWRC||LBM||DEM||multiphse flow