On 5 Jul 2022, at 12:49, <rucha.ku...@dlr.de<mailto:rucha.ku...@dlr.de>> <rucha.ku...@dlr.de<mailto:rucha.ku...@dlr.de>> wrote:
Hello, My name is Rucha Kunte and I am writing my Master Thesis at DLR-Cologne. The objective is to carry out a permeability analysis of a porous structure for which we plan on using Dumux. I have a couple of doubts in this case and would be grateful if I could get some help from your side: 1. While installing Dumux, I run into the following error. I am using Windows subsystem for Linux. <image001.png> <image002.png> <image003.png> <image004.png> I also tried installing via the python code given but it does not create build-cmake folder for me to run the examples as stated in the document. Could you please guide me with the installation? Dear Rucha, welcome to the mailing list. Unfortunately, from your posted output it is unclear to me what went wrong and you would have to describe _what commands you exactly executed_. Try to follow the installation instructions on the website carefully. Please post the entire terminal output as text file on the mailing list, so we have the full picture. 1. My second doubt is regarding how I would import my porous media geometry in the software. I have a plot of iso-surfaces and want to mesh the complex structure and further carry out the flow analysis. My 3d iso-surface visualization from MATLAB is below for your reference. In what format do I need this geometry to be? Or how do I feed the details of this geometry into Dumux for my analysis? I’m afraid, what you describe is currently not one of the strengths of Dumux. What you need there is a Stokes solver than runs on a parallel machine with MPI and supports unstructured grids (e.g. OpenFOAM). (You will need access to a cluster and some experience with parallel computing. For all tools I know you would also first have to create a volume mesh (e.g. using CGAL) / Dumux is not a meshing tool.) Dumux has a staggered grid Stokes solver that currently only supports staircase approximations of complex geometries and does not run yet in parallel. This will only suffice for a small subset of your sample. (We are currently working on better solvers for exactly this application but until they are available out-of-the-box, will take some time.) Depending on what you need for your application, a pore-network model approach gives you a reasonable estimate of permeability much faster than a Stokes simulation. For that you can use porespy (for network extraction) and Dumux (for flow simulations/permeabilities), see e.g. https://git.iws.uni-stuttgart.de/dumux-repositories/dumux/-/tree/master/examples/porenetwork_upscaling and https://git.iws.uni-stuttgart.de/dumux-repositories/dumux/-/tree/master/dumux/porenetwork/util Pore-network extractions are also very useful to learn more about your sample in general (you might have done that already?). Best wishes Timo 1. <image005.png> Looking forward to hearing from you. Thank you for the support in advance. Best Regards, Rucha Kunte _______________________________________________ DuMux mailing list DuMux@listserv.uni-stuttgart.de<mailto:DuMux@listserv.uni-stuttgart.de> https://listserv.uni-stuttgart.de/mailman/listinfo/dumux
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