caa a22 4500 445815035 CHVBK 20180317145224.0 cr unu---uuuuu 170323e20110501xx s 000 0 eng 10.1007/s10040-011-0709-2 doi (NATIONALLICENCE)springer-10.1007/s10040-011-0709-2 Non-Darcian flow to a well in a leaky aquifer using the Forchheimer equation [Elektronische Daten] [Zhang Wen, Guanhua Huang, Hongbin Zhan] Ecoulement non-Darcien vers un puits dans un aquifère semi-perméable utilisant l'équation de Forchheimer Non-Darcian flow to a well in a leaky aquifer was investigated using a finite difference method. Flow in the leaky aquifer is assumed to be non-Darcian and horizontal, while flow in the aquitard is assumed to be Darcian and vertical. The Forchheimer equation was employed to describe the non-Darcian flow in the aquifer. The finite difference solution was compared with the solution of Birpinar and Sen (2004). The latter overestimates the drawdown at early times and underestimates the drawdown at late times; also, the impact of β D on the drawdown depends on the value of B D, where β D is a dimensionless turbulent factor in the Forchheimer equation and B D is the dimensionless leakage parameter. The impact of leakage on drawdown is similar to that of Darcian flow. A sensitivity analysis indicated that the drawdown is very sensitive to the change in the dimensionless well radius r cD when B D is relatively large, while it is sensitive to the change in B D when B D is relatively small. The numerical solution has been applied to analyze the pumping test data in Chaj-Doab area of Pakistan. Birpinar ME, Sen Z (2004) Forchheimer groundwater flow law type curves for leaky aquifers. J Hydrol Eng 9(1):51-59 Springer-Verlag, 2011 Groundwater flow nationallicence Forchheimer equation nationallicence Finite difference method nationallicence Aquitard nationallicence Pakistan nationallicence Wen Zhang School of Environmental Studies, China University of Geosciences, 388 Lumo Rd., 430074, Wuhan, Hubei, People's Republic of China aut Huang Guanhua Department of Irrigation and Drainage, College of Water Conservancy and Civil Engineering, China Agricultural University, 100083, Beijing, People's Republic of China aut Zhan Hongbin Department of Geology and Geophysics, Texas A&M University, 77843-3115, College Station, TX, USA aut Hydrogeology Journal Springer-Verlag 19/3(2011-05-01), 563-572 1431-2174 19:3<563 2011 19 10040 https://doi.org/10.1007/s10040-011-0709-2 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10040-011-0709-2 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Wen Zhang School of Environmental Studies, China University of Geosciences, 388 Lumo Rd., 430074, Wuhan, Hubei, People's Republic of China aut NATIONALLICENCE 700 1- Huang Guanhua Department of Irrigation and Drainage, College of Water Conservancy and Civil Engineering, China Agricultural University, 100083, Beijing, People's Republic of China aut NATIONALLICENCE 700 1- Zhan Hongbin Department of Geology and Geophysics, Texas A&M University, 77843-3115, College Station, TX, USA aut NATIONALLICENCE 773 0- Hydrogeology Journal Springer-Verlag 19/3(2011-05-01), 563-572 1431-2174 19:3<563 2011 19 10040 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer