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VOF problem postprocessing display 3D flow profile

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Old   July 8, 2004, 10:52
Default VOF problem postprocessing display 3D flow profile
  #1
Saturn
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Hi! I was using VOF model to simulate the water flow in 3D channel. But I could not show the 3D flow profile (like wave).

How should I set the display the 3D wave profile?

Thanks!!
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Old   July 9, 2004, 08:41
Default Re: VOF problem postprocessing display 3D flow pro
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chakaltaya
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I believe I had a similar question as yours. Try creating Iso-Surface with vof=0.5. For further detail, refer to my posting in this forum under the title "visualizing waves around ship"
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Old   July 9, 2004, 16:39
Default Re: VOF problem postprocessing display 3D flow pro
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Ataki
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Hallo, you can see the contours of VOF of water between min=0.5 and max=1 by deactiving the auto scale of vof. best regards
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Old   July 13, 2004, 05:57
Default Re: VOF problem postprocessing display 3D flow pro
  #4
Boris
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Hi, Chakaltaya

How do you manage to model a planing craft using Fluent? The hull's position changes with time. How do you define the hull position? How about the results?

Thank you for any reply.

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Old   July 14, 2004, 00:58
Default Re: VOF problem postprocessing display 3D flow pro
  #5
chakaltaya
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Hello Boris,

It would be ideal if I could do the dynamic simulation as you described, but currently, the model I'm working on has the hull fixed in space. In fact, I have a 5- meter-long-1-meter-wide column tilted 5 degrees from horizontal position and small poriton of it is immersed into the water. Air and water are running at 13.89 m/sec. I'm trying various columns with different cross-sections to simulate different planning hull.

There might be a way to model a floating body in Fluent. It's just that I don't know how to do it at the moment. If someone can help me on this, I would greatly appreciate.

As for the results, I'm still trying to make the solution convergent. The residuals diverge depending on the shape of the hull. I managed to run a calculation successfully on a V shaped hull but round shape one diverged. Currently, I'm using a laminar model but I intend to try a turbulent model as well (e.g. Spalart-Almaras)
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