SOLVING PROBLEMS OF UNSTEADY – CONFINED FLOW TO PUMPED WELLS BY COMPUTER
محتوى المقالة الرئيسي
الملخص
In this research, a procedure to solve problems of unsteady flow to wells in confined aquifers by the computer is developed. The solution is based on the [THEIS:1935] procedure to solve such problems. The developed procedure is applied to (14) different sets of well – test data, including a predicted ideal one. The respective problems are solved completely by the computer without the need to construct or to refer to tables or nomographs; this, accordingly, deletes the role of personal judgment and the need to a high skill.
The applications indicate that the developed solution procedure is simple, easy to use, elaborate, superiorly fast in giving the required results, and comparatively accurate. Despite that the developed solution procedure has been set for the case of a pumped well in
an ideal confined aquifer, it is basically general; the computer program can be easily modified to fit the solution of problems of the other cases of groundwater flow to wells after introducing the additions that consider the respective boundary conditions
تفاصيل المقالة
كيفية الاقتباس
تواريخ المنشور
المراجع
ABDULLA, H. H. [2001]: "Quantitative and qualitative evaluation of groundwater resources in the Jolak Basin". M. Sc. thesis; University of Baghdad.
AL-ASSAF, S. A.-H. [1976]: "Application of computer techniques to ground-water flow problems". Ph. D. Dissertation; University College, London.
CHOW, V. T. [1952]: "On the determination of transmissibility and storage coefficients from pumping test data". Am. Geophys. Union Trans.; Vol. (33), pp. (397 – 404).
CHOW, V. T. {Editor-in-Chief} [1964]: "Handbook of applied hydrology". McGraw-Hill, U.S.A.
COOPER, H. H. and JACOB, C. E. [1946]: "A generalized graphical method for evaluating formation constants and summarizing well field history". Am. Geophys. Union Trans.; Vol. (27), PP. (526-534).
LINSLEY, R. K. (Jr.), KOHLER, M. A., and PAULHUS, J. L. H. [1988]: "Hydrology for engineers", (SI Metric Edition). McGraw-Hill, Singapore.
LOHMAN, S. W. [1972]: "Ground-water hydraulics". Geological Survey Professional Paper 708; U.S. Government Printing Office; Washington.
KRUSEMAN, G. P. and DE RIDDER, N. A. [1970]: "Analysis and evaluation of pumping test data". International Institute for Land Reclamation and Improvement; Wageningen, The Netherlands.
MCWHORTER, D. B. and SUNADA D. K. [1977]: "Groundwater hydrology and hydraulics". Water Resources Publications; Fort Collins, Colorado, U.S.A.
MONTGOMERY, D. C., RUNGER, G. C., and HUBELE, N. F. [1998]: "Engineering statistics". John Wiley; U.S.A.
THEIS, C. V. [1935]: "The relation between the lowering of the piezometric surface and the rate and duration of discharge of a well using groundwater storage". Am. Geophys. Union Trans.; Vol. (16), PP. (519-524).
UNESCO [1978]: "World water balance and water resources of the earth". Studies and Reports in Hydrology -25; UNISCO.
WALTON, W.C.[1970]: "Groundwater resource evaluation". McGraw-Hill Kogakusha; Tokyo.
WENZEL, L.K.[1942]: "Methods for determining permeability of water-bearing material, with special reference to discharging – well methods". U.S. Geol. Survey; Water Supply Paper 887; U.S.A