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March 1, 2023 at 12:58 pm
Thodorisdm
SubscriberDear,
I want to average the flow field of my last 10 time steps and then import it back in Fluent.
I am doing the averaging in Tecplot but whenever I am importing the .plt file into Ansys Fluent, I get the following error :
Multicore SMT processors detected. Processor affinity set!
Opening library "C:\PROGRA~1\ANSYSI~1\v201\fluent\fluent20.1.0\vki\win64\devtools4.4.6.dll"... done.
MPI Application rank 0 exited before MPI_Finalize() with status -1
The fl process could not be started.
Can you help me with this?
Kind regards,
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March 1, 2023 at 2:44 pm
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March 1, 2023 at 3:20 pm
Thodorisdm
SubscriberIt is binary.
I know it but it cannot help me. I want to modify the flow field for the last ten time-steps, by caclculating the average of the previous time- step and the current and then replace the current flow field with the averaged.
I can do it in Tecplot but the problem is when importing the (tecplot binary file --> .plt) back to fluent. I am using Fluent 2020R1 and I have tried tecplot versions from 2008 till 2019 but always the same error.
Thank you.
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March 1, 2023 at 4:10 pm
Rob
Forum ModeratorIf you don't change anything does the file read into Fluent?
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March 1, 2023 at 4:22 pm
Thodorisdm
SubscriberI tried it but still the same error persists.
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March 2, 2023 at 11:19 am
Rob
Forum ModeratorWhat type of cells have you got, and did you do any adaption?
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March 2, 2023 at 12:04 pm
Thodorisdm
SubscriberMainly structured and very few unstructured. I am using sliding mesh approach. When exporting the .plt file nothing changes on the mesh.
I downloaded the 2023R1 version but still I get the same error.
Let me describe the followed process in case the mistake is in it :
- Read the .cas.h5 file.
- Import the tecplot file at the same time step as the loaded case file.
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March 2, 2023 at 12:17 pm
Thodorisdm
SubscriberI don't think there is a solution to this issue.
I will probably have to switch to PyFluent or Scheme scripting. Which one is more computationally efficient to handle large matrices?
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March 2, 2023 at 1:17 pm
Rob
Forum ModeratorThe Tecplot format (.plt) overwrites the mesh anyway so is just mesh and data, no boundary conditions: no need to read in the case. Have you tried deleting the non-conformal interface before writing the Tecplot file out?
Depending on what data you need you may find Interpolation files easier to deal with. A colleague has used Python to merge data files before, he used legacy .dat but that was also before the HDF format was available.
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March 3, 2023 at 11:11 am
Thodorisdm
SubscriberThank you for your reply.
I think working with the interpolation files is the way to go.
However, in order to be more efficient, I want to use them in binary format. Therefore, could you please inform me on how are they encoded?
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March 3, 2023 at 11:27 am
Rob
Forum ModeratorIf it's not in the manual I can't comment: the forum is classed as an Export so I must comply with US law.
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