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how can I obtaion the aerodynamic forces on any component (boundary) from the restar |
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May 24, 2024, 09:53 |
how can I obtaion the aerodynamic forces on any component (boundary) from the restar
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#1 |
New Member
zhou
Join Date: Mar 2019
Posts: 8
Rep Power: 7 |
After completing the CFD computation, how can I retrieve the aerodynamic forces on any component (boundary) from the restart file? This question arises because the boundaries for the integrated forces in the history file are specified in MARKER_MONITORING, but I need to analyze the forces on other components.
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May 24, 2024, 17:39 |
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#2 |
Senior Member
bigfoot
Join Date: Dec 2011
Location: Netherlands
Posts: 674
Rep Power: 21 |
Why don't you include all markers in MARKER_MONITORING? You get the aerodynamic coefficients of all individual markers.
You can also save your problem as a multiblock paraview file. Then you have the individual markers available and you can use paraview's surface integration. |
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May 24, 2024, 20:47 |
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#3 |
New Member
zhou
Join Date: Mar 2019
Posts: 8
Rep Power: 7 |
If I put all the markers into MARKER_MONITORING, I will only get the total aerodynamic force from the history, not the integrated force for each marker.
My goal is to obtain the aerodynamic forces for all markers from a single CFD calculation. |
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May 25, 2024, 09:16 |
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#4 |
Senior Member
bigfoot
Join Date: Dec 2011
Location: Netherlands
Posts: 674
Rep Power: 21 |
Code:
MARKER_MONITORING= surface1, surface2 % Sum of the integrals over surface1 and surface2: CL, CD HISTORY_OUTPUT= AERO_COEFF Code:
MARKER_MONITORING= surface1, surface2 % Individual integrals over surface1 and surface2: CL(surface1), CL(surface2) HISTORY_OUTPUT= AERO_COEFF_SURF |
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May 25, 2024, 10:56 |
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#5 |
New Member
zhou
Join Date: Mar 2019
Posts: 8
Rep Power: 7 |
Thank you very much; this has solved a long-standing issue for me because I did not see AERO_COEFF_SURF in temp.cfg.
Additionally, I have another related question. May I ask it here in this thread? The question is: If MARKER_MONITORING = surface1, surface2 is given and the results need to be output to the Tecplot file (i.e., OUTPUT_FILES = (SURFACE_TECPLOT_ASCII)), I desire the Tecplot file to generate two zones. However, no matter how many surfaces are in MARKER_MONITORING, they all end up as a single zone in the Tecplot file. |
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May 30, 2024, 16:41 |
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#6 |
Senior Member
bigfoot
Join Date: Dec 2011
Location: Netherlands
Posts: 674
Rep Power: 21 |
I do not use tecplot, so I do not know if we the write proper multizone information to tecplot.
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force integration,restart |
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