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Exporting particle history data in CFDPost

- August 9, 2026 at 9:29 pm
  
  aniruddhabose96
  Subscriber
  
  Hi
  
  I am running a unsteady DPM simulation and exporting the particle history data during calculation in CFDPost format. When the simulation ends and I am restarting, then the .xml file is being re-written instead of appending the new data for the new time steps. How can i append the new data to the old data instead of replacing?
  
  thanks
- August 12, 2026 at 10:37 am
  
  Richie Mathew
  Subscriber
  
  Hello,
  
  To append the DPM Particle Tracks instead of overwritting it, use Practicle History Data Export in Automatic Export (51.15. Calculation Activities Task Page) found when you double click Calculation Activities in Solution Tree. In this even, if you stop and then start the calculation, the file will be appended. However, this won't work if you close the Fluent case.

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