Approximation of Well Function for Large Diameter Wells
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VIEW THE REPLYPublication: Journal of Irrigation and Drainage Engineering
Volume 133, Issue 4
Abstract
A computationally simple and accurate algebraic approximation of the well function for large diameter wells is proposed. This approximation can be used to calculate drawdown in a large diameter well due to steady pumping. Using this approximation, a method is proposed for calculating drawdowns in large diameter wells due to unsteady pumping discharge. The proposed method is also applicable for calculating residual drawdowns in large diameter wells. In principle, the proposed method that uses the approximation of the well function should yield more accurate results than the previously proposed kernel methods.
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References
Cimen, M. (2001). “A simple solution for drawdown calculation in a large diameter well.” Ground Water, 39(1), 144–147.
Papadopulos, I. S., and Cooper, H. H. (1967). “Drawdown in a well of large diameter.” Water Resour. Res., 3(1), 241–244.
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Singh, S. K. (2006). “Simplified kernel method for flow to large diameter wells.” J. Irrig. Drain. Eng., 132(1), 77–79.
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Information
Published In
Journal of Irrigation and Drainage Engineering
Volume 133 • Issue 4 • August 2007
Pages: 414 - 416
Copyright
© 2007 ASCE.
History
Received: Nov 16, 2005
Accepted: Aug 5, 2006
Published online: Aug 1, 2007
Published in print: Aug 2007
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