TY - JOUR
T1 - Applications of sensitivity analysis to uncertainty quantification in variably saturated flow
AU - Woodward, C.
AU - Grant, K.
AU - Maxwell, R.
N1 - Funding Information:
*This work was performed under the auspices of the U.S. Department of Energy by University of California Lawrence Livermore National Laboratory under contract No. W-7405-Eng-48.
PY - 2002
Y1 - 2002
N2 - In this paper, we present results demonstrating the effectiveness of a sensitivity analysis approach to uncertainty quantification of a variably saturated flow model. The basis for our method is a software system which simultaneously solves for solutions of large-scale nonlinear systems of equations and the sensitivity of the solutions to selected parameters. We present test cases showing the effects on the relative uncertainty of pressure due to heterogeneity in the absolute permeability and to differences in parameterizing the Van Genuchten curve soil parameters, α and n.
AB - In this paper, we present results demonstrating the effectiveness of a sensitivity analysis approach to uncertainty quantification of a variably saturated flow model. The basis for our method is a software system which simultaneously solves for solutions of large-scale nonlinear systems of equations and the sensitivity of the solutions to selected parameters. We present test cases showing the effects on the relative uncertainty of pressure due to heterogeneity in the absolute permeability and to differences in parameterizing the Van Genuchten curve soil parameters, α and n.
UR - http://www.scopus.com/inward/record.url?scp=77956970902&partnerID=8YFLogxK
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U2 - 10.1016/S0167-5648(02)80047-8
DO - 10.1016/S0167-5648(02)80047-8
M3 - Article
AN - SCOPUS:77956970902
SN - 0167-5648
VL - 47
SP - 73
EP - 80
JO - Developments in Water Science
JF - Developments in Water Science
IS - C
ER -