Influence of unsaturated soil properties uncertainty on moisture flow modeling

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The quality of numerical modeling solution of moisture flow through unsaturated soil, in part, depends on properly described unsaturated soil properties. The variability of Soil Water Characteristic Curve, SWCC, is attributed to hysteresis and difficulties associated with its measurement. The variability of unsaturated soil permeability is contributed to the uncertainty associated with the estimation of this parameter with currently available fit functions, hence a range of reasonable variation was considered. One-dimensional analysis of expansive soil under dry initial conditions (-1500 kPa) was performed; both potential evaporation and infiltration boundary conditions were considered. It was found that small variations in unsaturated soil permeability function result in significantly different modeling outputs while variation in SWCC produced almost identical soil response in terms of soil suction.

Original languageEnglish (US)
Title of host publication12th International Conference on Computer Methods and Advances in Geomechanics 2008
Pages2521-2528
Number of pages8
Volume4
StatePublished - 2008
Event12th International Conference on Computer Methods and Advances in Geomechanics 2008 - Goa, India
Duration: Oct 1 2008Oct 6 2008

Other

Other12th International Conference on Computer Methods and Advances in Geomechanics 2008
CountryIndia
CityGoa
Period10/1/0810/6/08

Fingerprint

Unsaturated Soil
flow modeling
Moisture
Soil
soil property
moisture
Soils
Uncertainty
Modeling
Permeability
soil
Range of a function
Characteristic Curve
Infiltration
permeability
Dimensional Analysis
Suction
Numerical Modeling
Evaporation
Hysteresis

Keywords

  • Hysteresis
  • Modeling
  • Uncertainty
  • Unsaturated

ASJC Scopus subject areas

  • Geotechnical Engineering and Engineering Geology
  • Applied Mathematics

Cite this

Dye, H. B., Houston, S., & Welfert, B. (2008). Influence of unsaturated soil properties uncertainty on moisture flow modeling. In 12th International Conference on Computer Methods and Advances in Geomechanics 2008 (Vol. 4, pp. 2521-2528)

Influence of unsaturated soil properties uncertainty on moisture flow modeling. / Dye, H. B.; Houston, Sandra; Welfert, Bruno.

12th International Conference on Computer Methods and Advances in Geomechanics 2008. Vol. 4 2008. p. 2521-2528.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Dye, HB, Houston, S & Welfert, B 2008, Influence of unsaturated soil properties uncertainty on moisture flow modeling. in 12th International Conference on Computer Methods and Advances in Geomechanics 2008. vol. 4, pp. 2521-2528, 12th International Conference on Computer Methods and Advances in Geomechanics 2008, Goa, India, 10/1/08.
Dye HB, Houston S, Welfert B. Influence of unsaturated soil properties uncertainty on moisture flow modeling. In 12th International Conference on Computer Methods and Advances in Geomechanics 2008. Vol. 4. 2008. p. 2521-2528
Dye, H. B. ; Houston, Sandra ; Welfert, Bruno. / Influence of unsaturated soil properties uncertainty on moisture flow modeling. 12th International Conference on Computer Methods and Advances in Geomechanics 2008. Vol. 4 2008. pp. 2521-2528
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