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How to plot interface shape between two phases.

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Old   March 1, 2005, 15:35
Default How to plot interface shape between two phases.
  #1
Manoj Kumar
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hi everone

Can anyone help me to plot the shape of interface between two phases. I have solved my problem using VOF scheme ( with 2 phases, air and water). Now i want to plot the shape of free surface, as well as the contour of water height with respect to initial water surface.

Please help. Thanking u..

Manoj
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Old   March 1, 2005, 17:27
Default Re: How to plot interface shape between two phases
  #2
James
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I think you need to export boths data by ASCII data. Then, use another plot tools such as MatLab or TecPlot. ex, for MatLab 1. Plot initail water 2. hold on 3. Plot water height.

Is it an answer?
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Old   March 2, 2005, 04:53
Default Re: How to plot interface shape between two phases
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Manoj Kumar
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Thanx James. I am going to try this now.
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Old   March 2, 2005, 10:10
Default Re: How to plot interface shape between two phases
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Amir
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FLUENT have a specific postprocessing feature for that.

Solve -> Animate -> Define In "Define" choose water volume fracion
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Old   March 3, 2005, 13:25
Default Re: How to plot interface shape between two phases
  #5
Manoj Kumar
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Hi Amir I am using steady state scheme and have got the final data after iteration. I am able to plot contours of volume fraction of water on any plane in the domain, by using swape surface feature. But how do I plot the actual deformed free surface. Is there any such feature in fluent.

Thanks
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Old   March 3, 2005, 13:38
Default Re: How to plot interface shape between two phases
  #6
pavel
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Hi ...

You can plot the surface shape using the iso-surface tool in the surface menu. Once you are in the iso-surface menu, choose volume fraction option (obviously you are working with the VOF model!),choose the phase you want to analyse, and type 0.5 as constant value. Finally, go to the grid menu and select the iso-surface you have created. For better presentation, go to the options and turn the lights on.

If you want to trace the surface in transient case, you must save the data for the initial and final step you want to visualize.

Hope this should be useful.

Bye
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Old   March 3, 2005, 16:47
Default Re: How to plot interface shape between two phases
  #7
Manoj Kumar
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hi Pavel Thanks a lot. I tried it and it worked so well. Thanks again. Manoj
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