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A New Solution for Water Storage to a Fixed Depth for Constant Flux Infiltration
Author(s) -
Si Bing Cheng,
Kachanoski R. Gary
Publication year - 2000
Publication title -
soil science society of america journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.836
H-Index - 168
eISSN - 1435-0661
pISSN - 0361-5995
DOI - 10.2136/sssaj2000.64124x
Subject(s) - infiltration (hvac) , reflectometry , flux (metallurgy) , soil water , soil science , constant (computer programming) , mechanics , water flow , environmental science , materials science , thermodynamics , time domain , physics , computer science , metallurgy , computer vision , programming language
A quantitative description of water infiltration under constant flux boundary conditions is useful for predicting water flow and chemical transport processes occurring in surface soils. A new quasi‐analytical solution for water storage to a fixed depth for constant flux infiltration is presented. The solution, based on the flux–concentration relationship, allows general forms of soil hydraulic functions to be used and provides a direct interpretation of measurements from vertically installed time domain reflectometry probes. To evaluate the solution, a constant flux infiltration experiment was conducted and the hydraulic parameters for the experimental site were determined independently. The solution predictions using the approximate flux–concentration relationship for linear soils were essentially identical to an existing analytical solution using the Broadbridge and White form of hydraulic functions and to the measurements.