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Unsaturated Flow/Effective Saturation/Inflow and out flow
Posted May 3, 2017, 6:59 p.m. EDT Fluid & Heat, Microfluidics, Porous Media Flow, Simulation Apps, Geometry, Materials, Modeling Tools & Definitions, Parameters, Variables, & Functions, Results & Visualization Version 4.4 0 Replies
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I am using Richard's equation model with fracture flow model, I want to have effective saturation (dl.Se) for which i am using these settings.
Top of model Hp = 0.0005[mm]
Bottom Hp= -150mm as for (dl.Se) Hp must be in negative
Initial value Hp = -150mm
Permeability Ks = 10^-12
For evaluation of dl.Se i am using Avergae ( Component Coupling) for matrix and fractures with Global evaluation Expression ( aveop1(dl.Se).
For evaluation of inflow and out flow i am using Integration ( Component Coupling) at top and bottom of model respectively with Global evaluation Expression ( intop1( dl.U*dl.D) for flow in (m^3/s).
I want to have same inflow and outflow that means , effective saturation from dry condition to fully saturated. But when i simulate the model dl.Se rises from 0.006 at day(0) to 0.26 at day (10) and then remains constant for the day(1000) . If we change Ks to 10^-8 then at day (1) dl.Se becomes (0.97).
Any suggestions to resolve this problem will be appreciated.
copy of model is also attached.
Regards,
Shahid
Attachments:
Hello Muhammad Shahid Manzoor
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