1998
DOI: 10.1080/02626669809492183
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Transition from transient Theis wells to steady Thiem wells

Abstract: Simple analytical calculations of groundwater flow around wells usually employ the Thiem well formula for steady calculations and the Theis formula for transient calculations. The superposition principle can be used with both formulas and even for combinations of both formulas. It is generally assumed that flow converges to a steady state when the boundary conditions remain constant for a long time. However, the heads in Theis's formula do not converge to steady heads for large times, although the (specific) d… Show more

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Cited by 4 publications
(2 citation statements)
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“…Many researchers have discussed the problem of steady-state flow and warn of erroneous results when applying the Thiem equation to problems of an infinite aquifer (Bear, 1979). Zaadnoordijk (1998) proposed an analytical algorithm based on the superposition principle to simulate transient flow using the Theis equation between any two given steady-state groundwater flows represented by the Thiem equation. His study implies that the steady-state condition is related to consideration of the effects of the well radius and the finite boundary.…”
Section: Introductionmentioning
confidence: 99%
“…Many researchers have discussed the problem of steady-state flow and warn of erroneous results when applying the Thiem equation to problems of an infinite aquifer (Bear, 1979). Zaadnoordijk (1998) proposed an analytical algorithm based on the superposition principle to simulate transient flow using the Theis equation between any two given steady-state groundwater flows represented by the Thiem equation. His study implies that the steady-state condition is related to consideration of the effects of the well radius and the finite boundary.…”
Section: Introductionmentioning
confidence: 99%
“…A boundary element formulation using these elements is presented in [13]. Zaadnoordijk [19] developed an improved well element that approaches a steady-state situation in the limit. Analytic elements for fully three-dimensional flow include wells, line-sinks, and circular area-sinks (e.g.…”
Section: Introductionmentioning
confidence: 99%