A computer method based on simulated annealing to identify aquifer parameters using pumping-test data

Yen Chen Huang, Hund-Der Yeh*, Yu Chung Lin

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

Conventional graphical of computer methods for identifying aquifer parameters have their own inevitable limitations. This paper proposes a computer method based on a drawdown model and a heuristic approach of simulated annealing (SA) to determine the best-fit aquifer parameters of the confined and unconfined aquifer systems. The drawdown model for the confined aquifer is the Theis solution and the unconfined aquifer is the Neuman solution. The estimated results of proposed method have better accuracy than those of the graphical methods and agree well with those of the computer methods based on the extended Kalman filter and Newton's method. Finally, the sensitivity analyses for the control parameters of SA indicate that the proposed method is very robust and stable in parameter identification procedures.

Original languageEnglish
Pages (from-to)235-249
Number of pages15
JournalInternational Journal for Numerical and Analytical Methods in Geomechanics
Volume32
Issue number3
DOIs
StatePublished - 25 Feb 2008

Keywords

  • Confined aquifer
  • Groundwater
  • Parameter identification
  • Pumping test
  • Simulated annealing
  • Unconfined aquifer

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