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**Harvard**

svensson, p. (2016) *Mass Transport in Heterogeneous Porous Granular Materials*. Göteborg : Chalmers University of Technology

** BibTeX **

@misc{

svensson2016,

author={svensson, peter},

title={Mass Transport in Heterogeneous Porous Granular Materials},

abstract={In this thesis, the impact of the particle size distribution and spatial correlations
in porous granular material structures on fluid permeability is systematically investigated.
A goal is to complement the existing versions of the Kozeny-Carman
equation, relating the material properties fluid permeability, porosity and specific
surface, with an explicit spatial dependence. Including such a dependence would
make it possible to distinguish between materials with different degree of heterogeneity,
i.e. granular structures in which the granules are uniformly distributed and
in which the they tend to create clusters. An in silico (simulation-based) approach
is employed, where virtual material structures based on monodisperse, lognormal
and bidisperse size distributions of granules are generated using Monte Carlo-based
algorithms. The spatial correlations in the structures are characterized using two
types of microstructural descriptors, the pore size distribution and the two-point
probability function. Fluid dynamics simulations, from which the fluid permeability
is obtained, are performed using a lattice Boltzmann method-based software. The
results suggest that there is a linear relationship between the fluid permeability and
the squared mean of the pore size distribution. This relationship holds for isotropic
structures. As the degree of isotropy decreases, the permeability becomes dependent
on the flow direction. It is also shown that the two-point probability function may
be used to investigate the order and correlations in the structures, as well as to
characterize clustering.},

publisher={Institutionen för fysik (Chalmers), Chalmers tekniska högskola,},

place={Göteborg},

year={2016},

keywords={Virtual material design, fluid permeability, soft matter physics, granular},

note={57},

}

** RefWorks **

RT Generic

SR Electronic

ID 239158

A1 svensson, peter

T1 Mass Transport in Heterogeneous Porous Granular Materials

YR 2016

AB In this thesis, the impact of the particle size distribution and spatial correlations
in porous granular material structures on fluid permeability is systematically investigated.
A goal is to complement the existing versions of the Kozeny-Carman
equation, relating the material properties fluid permeability, porosity and specific
surface, with an explicit spatial dependence. Including such a dependence would
make it possible to distinguish between materials with different degree of heterogeneity,
i.e. granular structures in which the granules are uniformly distributed and
in which the they tend to create clusters. An in silico (simulation-based) approach
is employed, where virtual material structures based on monodisperse, lognormal
and bidisperse size distributions of granules are generated using Monte Carlo-based
algorithms. The spatial correlations in the structures are characterized using two
types of microstructural descriptors, the pore size distribution and the two-point
probability function. Fluid dynamics simulations, from which the fluid permeability
is obtained, are performed using a lattice Boltzmann method-based software. The
results suggest that there is a linear relationship between the fluid permeability and
the squared mean of the pore size distribution. This relationship holds for isotropic
structures. As the degree of isotropy decreases, the permeability becomes dependent
on the flow direction. It is also shown that the two-point probability function may
be used to investigate the order and correlations in the structures, as well as to
characterize clustering.

PB Institutionen för fysik (Chalmers), Chalmers tekniska högskola,

LA eng

LK http://publications.lib.chalmers.se/records/fulltext/239158/239158.pdf

OL 30