Modelling flow and transport in variably saturated porous media: Applications from percolation theory and effective-medium approximation

2021 ◽  
pp. 79-117
Author(s):  
Behzad Ghanbarian ◽  
Allen G. Hunt
Keyword(s):  
Porous Media ◽  
Percolation Theory ◽  
Effective Medium ◽  
Effective Medium Approximation ◽  
Saturated Porous Media ◽  
Flow And Transport ◽  
Media Applications

Vadose Zone, Part I : Characterization and Flow Processes

2003 ◽  
Author(s):  
Yoram Rubin
Keyword(s):  
Porous Media ◽  
Water Flow ◽  
Governing Equation ◽  
Vadose Zone ◽  
Stochastic Analysis ◽  
Transport Processes ◽  
Richards Equation ◽  
Saturated Porous Media ◽  
Flow And Transport ◽  
Flow Processes

Many of the principles guiding stochastic analysis of flow and transport processes in the vadose zone are those which we also employ in the saturated zone, and which we have explored in earlier chapters. However, there are important considerations and simplifications to be made, given the nature of the flow and of the governing equations, which we explore here and in chapter 12. The governing equation for water flow in variably saturated porous media at the smallest scale where Darcy’s law is applicable (i.e., no need for upscaling of parameters) is Richards’ equation (cf. Yeh, 1998)

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