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Unable to run lid-driven cavity flow with 1M elements |
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#1 |
New Member
dougal
Join Date: Oct 2013
Posts: 1
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I am trying to recreate a set of tests done for the hpcadvisorycouncil - http://www.hpcadvisorycouncil.com/pd...l_2680_FCA.pdf
It calls for "Lid Driven Cavity Flow - 1 Million elements, 2D, icoFoam solver for laminar, isothermal, incompressible flow", so I have taken the OpenFOAM tutorial and modified the blockMesh to be 1000 x 1000 versus 20 x 20. When I run, it gives me a "floating point error". Any tips or ideas how I can configure the case to match the example cited? My goal is to run it on 1,2,4,8,16,32,64 cores. |
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#2 |
Senior Member
Join Date: Dec 2011
Posts: 111
Rep Power: 19 ![]() |
I think it would be useful to give us some more information, for example a more detailed error message.
My first suspicion is that you have a too large timestep tough... A 1M mesh in 2D would imply 1000x1000 cells (if square), and that require a very small timestep, in special because your top corners will behave as singular points with high velocities. |
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#3 |
New Member
puneet
Join Date: Nov 2015
Posts: 19
Rep Power: 10 ![]() |
Hi hakon, dougalb
I am trying the same experiment, Post is here - Setting up Lid driven Cavity Benchmark with 1M cells for multiple cores input files for cavity experiment is here This is the error message i am getting , could you please advice. |
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