Streamlines of a fluid moving inside a pipe that is also in motion

- July 24, 2018 at 2:18 pm
  
  ewold
  Subscriber
  
  Hello,
  
  I have a pipe that is being translated in space back and forth with fluid moving inside of it. When I try to visualize the velocity streamlines of the fluid, Fluent shows me streamlines that correspond to the velocity of the pipe, not the fluid inside the pipe. How can I see the streamlines of the fluid with respect to the pipe, even though the velocity vector is dominated by the overall movement of the pipe?
  
  Thanks
- July 24, 2018 at 9:22 pm
  
  Karthik R
  Administrator
  
  Hi,
  
  Check out the 'Reference zone' from the 'Reference Values' set-up options (section 32.12.2., Fluent Users Guide). Selecting the desired reference zone will allow you to plot relative quantities. Also go through section 9.3.6. - Postprocessing for MRF and Mixing Plane Problem. Here is a snip.
  
  I hope this answers your question.
  
  Best Regards,
  
  Karthik

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