New approximate analytical technique to solve Richards equation for arbitrary surface boundary conditions

A general approximation for the solution to the one- dimensional Richards equation is presented. It applies to arbitrary soil properties and boundary conditions but only uniform initial conditions at current stage. The result is very accurate (within 2%) when the diffusivity is constant, suggesting that the present general formulation is reliable, since the approximation becomes increasingly accurate as the soil-water diffusivity approaches a delta function.


Published in:
Water Resources Research, 33, 4, 903-906
Year:
1997
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Note: The status of this file is: Involved Laboratories Only


 Record created 2005-12-09, last modified 2018-03-18

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