Modeling of Permeability Reduction in Bioclogged Porous Sediments

Cited 0 time in webofscience Cited 0 time in scopus
  • Hit : 224
  • Download : 0
This study examines the use of a numerical model to predict the reduction in permeability of bioclogged specimens observed from column experiments. The numerical model uses the two-dimensional (2D) segmented scanning electron microscope (SEM) images of the initial microstructure of soil and simulates the growth of biofilm assuming uniform grain coating around particles. The corresponding Navier-Stokes equation in free pore space and the flow within the biofilm described by the Brinkman equations are solved using finite-element analysis. The numerical results are shown to match the experimental data very well. The predictions by the different analytical models used in the current literature are also compared. The numerical model, utilizing the uniform grain coating criterion for biofilm growth, is shown to predict well the permeability reduction of porous medium as a function of biofilm saturation.
Publisher
ASCE-AMER SOC CIVIL ENGINEERS
Issue Date
2018-04
Language
English
Article Type
Article
Keywords

BIOFILM GROWTH; HYDRAULIC CONDUCTIVITY; PHYSICAL-PROPERTIES; MEDIA; TRANSPORT

Citation

JOURNAL OF GEOTECHNICAL AND GEOENVIRONMENTAL ENGINEERING, v.144, no.4

ISSN
1090-0241
DOI
10.1061/(ASCE)GT.1943-5606.0001869
URI
http://hdl.handle.net/10203/240696
Appears in Collection
CE-Journal Papers(저널논문)
Files in This Item
There are no files associated with this item.

qr_code

  • mendeley

    citeulike


rss_1.0 rss_2.0 atom_1.0