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what's the suitable geometry Boundary for flow analysis in plaxis ?

Khalid kamal — Fri, 14 Jul 2023 20:02:19 GMT

, in Plaxis 2D tutorial.09; if I increased or decreased the geometry in X direction that will give me a different value to the total discharge, and if I specify geometry in flow analysis according to the radius of influence but in this example R=3000*3*(8.25e-5)0.5=81 m and that not same with the geometry in the example that may be same in case you assumed the example like a trench, so I want to know the true and what the base in geometry boundary in plaxis for flow analysis ?

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Fri, 14 Jul 2023 05:46:49 GMT

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Extraction using wells in PLAXIS 3D

Madeleine Groves — Wed, 18 Nov 2020 15:54:47 GMT

Hello,

We are looking to model an extraction well. I have input the minimum head and discharge rate in m3/day and had planned to run the analysis over an increasing number of days so that we could assess decrease in groundwater head in the area around the well against time spent extracting. However the results show the same groundwater head levels irrespective of number of days the stage is run over (I have tried between 1 and 30 days). Is there anything else I would need to input / conditions I need to change in the model to be able to calculate a time dependent head reduction?

Kind regards,

Maddie