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Mismatch area

- March 23, 2024 at 10:28 am
  
  Andrea Heras
  Subscriber
  
  Hello,
  
  I’m running a 2D simulation of a tube with two faces, each having a diameter of 15 mm.
  On one side, there’s a volume flow rate of $6 \times 1 0^{-4}$ m^3/s.
  On the other side, there’s a pressure outlet of 10 Pa.
  However, when I calculate the area, the order of magnitude is significantly different from what I expected. The area should be $1.5 \times 1 0^{-4}$ m^2, but the result from ANSYS is $1.5 \times 1 0^{-2}$ m^2. Can anyone explain why there’s such a large discrepancy?
  Additionally, when I applied a scale factor to correct the area, the outlet pressure automatically changed. Instead of remaining at 10 Pa, it increased to 24 Pa. Why did this happen?
  
  Thanks
- March 25, 2024 at 11:20 am
  
  Rob
  Forum Moderator
  
  Please post images.
- March 25, 2024 at 8:44 pm
  
  Andrea Heras
  Subscriber
  
  Hello,
  My simulation involves a cylindrical body with a protrusion on the underside (valve). However, when I calculate the pressure face area using ANSYS, the result doesn't make sense.
  
  Thanks
- March 26, 2024 at 9:25 am
  
  Rob
  Forum Moderator
  
  OK, so 15mm height, with an assumed depth of 1m as it's 2d: that looks correct.
- March 26, 2024 at 9:31 pm
  
  Andrea Heras
  Subscriber
  
  Is there any way to indicate that it is a 15 mm diameter cylinder and that it is not 1 m deep?
- April 2, 2024 at 12:29 pm
  
  Rob
  Forum Moderator
  
  Other than a 3d model?

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