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June 12, 2020, 05:39 |
pasive particles
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#1 |
New Member
mba olufemi
Join Date: Aug 2018
Posts: 6
Rep Power: 7 |
Dear all,
I think I finally understand all the parameters needed for a successful definition of Lagrangian injector and the corresponding kinematicCloudProperties and run my closed geometries simulation. If there is interest I would post my findings. Now I need an advice on the solver. What solver would you advice for simulating a cloud of passively dragged scarce particles in a flow impinging on an obstacle? My particles don’t evaporate or burn; the tunnel they fly in is isothermal and the flow is much below sonic speeds. How to define the interaction properties with the obstacle in a way that that some particles would bounce, some stick and some slip? Is there an example I could study? Thanks a lot Mba |
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July 28, 2020, 06:05 |
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#2 |
Member
Join Date: Sep 2010
Location: Leipzig, Germany
Posts: 93
Rep Power: 15 |
I would suggest to build your own solver. Your case description seems as pimpleFoam would be a good base. Include the kinematicCloud-functionality there.
The handling of patch collisions is done by patch interaction models. You can find them in "src/lagrangian/intermediate/submodels/Kinematic/PatchInteractionModel/". Having a look at "StandardWallInteraction.C" gives you an example how to define what is done with particles when they hit a patch. Here it is predefined by a switch in a dictionary. Instead, you could for example define a critical normal velocity, below which particles stick, and above which particles bounce. |
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