Nonlinear flow in karst formations.
The variation of effective hydraulic conductivity as a function of specific discharge in several 0.2-m and 0.3-m cubes of Key Largo Limestone was investigated. The experimental results closely match the Forchheimer equation. Defining the pore-size length scale in terms of Forchheimer parameters, it is demonstrated that significant deviations from Darcian flow will occur when the Reynolds number exceeds 0.11. A particular threshold model previously proposed for use in karstic formations does not show strong agreement with the data near the onset of nonlinear flow.
Chin
David A
DA
Department of Civil Engineering, University of Miami, Coral Gables, FL 33124, USA. dchin@miami.edu
Price
René M
RM
DiFrenna
Vincent J
VJ
D008962:Models, Theoretical; D014872:Water Movements