March 1, 2023 at 12:58 pmThodorisdmSubscriber
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?
March 1, 2023 at 2:44 pm
March 1, 2023 at 3:20 pmThodorisdmSubscriber
It 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.
March 1, 2023 at 4:10 pmRobForum Moderator
If you don't change anything does the file read into Fluent?
March 1, 2023 at 4:22 pmThodorisdmSubscriber
I tried it but still the same error persists.
March 2, 2023 at 11:19 amRobForum Moderator
What type of cells have you got, and did you do any adaption?
March 2, 2023 at 12:04 pmThodorisdmSubscriber
Mainly 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.
March 2, 2023 at 12:17 pmThodorisdmSubscriber
I 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?
March 2, 2023 at 1:17 pmRobForum Moderator
The 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.
March 3, 2023 at 11:11 amThodorisdmSubscriber
Thank 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?
March 3, 2023 at 11:27 amRobForum Moderator
If 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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