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About the simulation of fluid flow in porous media using Richard's equation in COMSOL
Posted Oct 9, 2021, 5:09 a.m. EDT Fluid & Heat, Microfluidics, Porous Media Flow 0 Replies
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Dear all, I am repeating the simulation with results published in Article Experimental Measurement of Parameters Governing Flow Rates ... I follow all of their instructions in the COMSOL simulations, with parameters listed in the supplementary information. I set up a geometry of 1cm (w) x 10 cm (L) strip as the article suggested. And provided an initial condition of -500e3 Pa all over the geometry. The boundary conditions were set as the author suggested too. The three edges are set as no-flux condition. And a pressure of 0 Pa for the remaining edge which is initially saturated with water. With a fine physic-controlled mesh and a step of (0,0.1, 10 min) for a time dependent study, the result, however, shows there is no Darcy flow through the geometry, only a very tiny velocity is observed at the edge saturated at the beginning of the study. I am writing to see if i have setup something wrong and Thanks in advance for your kindly replies. Lawrence.
Hello Kaiqi Yan
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