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Laboratory validation of lattice Boltzmann method for modeling pore-scale flow in granular materials
 

Summary: Laboratory validation of lattice Boltzmann method for
modeling pore-scale flow in granular materials
Muhammed E. Kutay a,1
, Ahmet H. Aydilek a,*, Eyad Masad b
a
Department of Civil and Environmental Engineering, University of Maryland, 1163 Glenn Martin Hall, College Park, MD 20742, United States
b
Zachry Department of Civil Engineering, Texas A&M University, 3135 TAMU, College Station, TX 77843, United States
Received 8 February 2006; received in revised form 2 July 2006; accepted 9 August 2006
Available online 23 October 2006
Abstract
Characteristics of fluid flow through various engineering structures, such as granular filters and asphalt pavements, influence their
design life. Numerical simulation of fluid flow is useful for evaluating the hydraulic characteristics of these materials. Among various
techniques, the lattice Boltzmann (LB) method is widely accepted due to the ease of implementing boundary conditions and the numer-
ical stability in a wide variety of flow conditions. It has proven to be extremely efficient in the simulation of fluid flow through the com-
plex geometries of granular materials. In this study, two-dimensional and three-dimensional LB models were developed to represent
pore-scale monophasic Newtonian incompressible fluid flow in granular materials. Three-dimensional geometries of compacted aggre-
gates and asphalt specimens were generated from X-ray Computed Tomography technique and used as input for the LB model. The
accuracy of the models was verified by comparing the results with analytical solutions of simple geometries and hydraulic conductivity
measurements on the compacted aggregates and hot mix asphalt specimens. The results of LB simulations were in excellent agreement

  

Source: Aydilek, Ahmet - Department of Civil and Environmental Engineering, University of Maryland at College Park

 

Collections: Engineering