Extract Flow Region

Extract flow region
If the model does not contain all flow regions, assignments in the simulation setup have to be repeated on every mesh. Use flow volume extraction to avoid this issue.

Why I am seeing this error?

HI @tedmund,
please share project link with me.
if you want to extract flow volume than follow below step.

  1. right-click on geometry
  2. open “add geometry operation”
  3. and select flow volume extraction type.

simply follow these simscale documents

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This is my project link :

currently i am struggling with the particle trace to come out with the fluid flow pattern. As you taught, I make the bounding volume visible , but still, I cannot see any fluid flow pattern. Do I need to extract flow region first before i obtain my desire result?