Streamline does not appear from the interface

- July 30, 2019 at 2:42 pm
  
  sumansapkota
  Subscriber
  
  Hello,
  
  I am designing a pump blade. While calculating the performance of the centrifugal impeller, I do not see the streamlines from the rotor-volute interface. I thought that the streamline of the whole rotor-volute domain could be visualized when I selected the streamline to start from the Inlet. But, it stops in the interface. The solution is converged and the head and efficiency criteria are met but I wanted to see the overall flow from inlet to outlet to map the turbulent regions. Is it because I have a huge gap (50 mm) at the rotor-volute interface? The interface is frozen rotor with pitch change set to automatic. I have uploaded the image and ccl file for the question. Thanking you.
- July 31, 2019 at 10:14 am
  
  Rob
  Ansys Employee
  
  Please can you post the image? Staff are not permitted to open attachments or links.
  
  If you plot contours of velocity does the result look sensible?
- August 7, 2019 at 10:33 am
  
  sumansapkota
  Subscriber
  
  It was solved. The gap is very large in between the rotor and the volute. It had to be decreased down to 1 mm.
- August 7, 2019 at 2:30 pm
  
  Rob
  Ansys Employee
  
  Yes. The interface is designed to pass data between surfaces that are in close proximity: by close we're talking near enough on top of each other.

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