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January 12, 2010, 14:52 |
How to sample during run
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#1 |
New Member
Jason Ryon
Join Date: Oct 2009
Posts: 17
Rep Power: 17 |
Is there a way to run "sample" during a run? For example, I would like to monitor mdot through an inlet and create an animation of a 2D plane slice every 10 or so timesteps. However, to do this with a post-processing sample, I would be required to write the entire case every 10 timesteps and then run sample in the end - which is a lot of storage required.
Thanks, Jason |
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January 13, 2010, 07:44 |
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#2 | |
Assistant Moderator
Bernhard Gschaider
Join Date: Mar 2009
Posts: 4,225
Rep Power: 51 |
Quote:
Bernhard |
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January 13, 2010, 13:14 |
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#3 |
New Member
Jason Ryon
Join Date: Oct 2009
Posts: 17
Rep Power: 17 |
Yes, the surfaces function worked great for getting animations during runtime instead of post-process. Also the simpleFunctionObjects works great to do things like mass flow and pressure averages.
Thanks! Jason |
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March 31, 2010, 17:39 |
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#4 | |
New Member
Michael Lawson
Join Date: Apr 2009
Location: NREL - Boulder, CO
Posts: 11
Rep Power: 17 |
Quote:
I'm trying to use the surfaces functionObject but have been unable to figure out the syntax for the controlDictionary. Could you post a quick example. Thanks in advance, -Mike |
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March 31, 2010, 17:59 |
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#5 |
New Member
Jason Ryon
Join Date: Oct 2009
Posts: 17
Rep Power: 17 |
In system/controlDict, try to add a new section like:
functions { animate { type surfaces; functionObjectLibs ("libsampling.so"); outputControl timeStep; outputInterval 50; surfaceFormat vtk; interpolationScheme cellPointFace; fields ( p U ); surfaces ( aplane { type plane; basePoint (0.0 0.0 0.0); normalVector (0.0 0.0 1.0); } pressure_inlet_001 { type patch; patchName pressure_inlet_001; } ); } //for the simpleFunction - which you have to download this separately massFlow { type patchMassFlow; functionObjectLibs ("libsimpleFUnctionObjects.so"); verbose true; outputControl timeStep; outputInterval 1; patches ( pressure_inlet_001 pressure_outlet ); }; //another simpleFunction patchAverage { type patchAverage; functionObjectLibs ("libsimpleFunctionObjects.so"); verbose true; outputControl timeStep; outputInterval 1; patches ( pressure_inlet_001 pressure_outlet ); fields ( p U ); } } |
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March 31, 2010, 18:18 |
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#6 |
New Member
Michael Lawson
Join Date: Apr 2009
Location: NREL - Boulder, CO
Posts: 11
Rep Power: 17 |
Thanks Jason, worked perfectly.
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April 5, 2010, 07:42 |
sampling for Lagrangian particle tracking
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#7 |
New Member
sankarv
Join Date: Feb 2010
Posts: 26
Rep Power: 16 |
Is there a similar sampling tool for Lagrangian particles ? i.e, I would
like to collect particle statistics such as mean particle size, mean particle velocity etc., at an arbitrary surface inside the domain ? Please let me know Thanks Vaidya |
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