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Old   July 22, 2008, 20:40
Default plot surface elevation
  #1
George Kakavas
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Hello everyone

I use the VOF model in Fluent to propagate waves along a slope. I use variable time step method, unsteady solver. I use 2ddp version and UDF files for the inlet conditions. How can i plot the surface elevation as a function of time at a specific point that I am interested in? I do not see any options at display or plot panel.. Thank you in advance
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Old   July 22, 2008, 20:59
Default Re: plot surface elevation
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CDE
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Setup a line at postion you want to monitor the level at. Then Iso-clip the line to volume fraction of 0.5. Finally, setup a monitor of maximum y-coordinate on the clipped line.
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Old   July 23, 2008, 09:54
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George Kakavas
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So to understand this properly because i am not a Fluent expert, i need to plot the surface elevation at a specific point which is located underneath the initial water level. Do i need to create a vertical or a horizontal line?

And then at iso-clip there are 2 values to enter for volume fraction. Min and max. Which of them should be 0.5 and what is the apropriate value for the other?

And finally, when plotting y-coordinate, do i need to set area-weighted average for the y-axis?or something else?

Thank you again
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Old   July 23, 2008, 17:21
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CDE
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I'm assuming that your surface elevation is horizontal so you need to create a vertical line. This makes it perpendicular to the surface.

Iso-clip the line with min=0.5 and max=1 volume fraction of the fluid that you want to monitor. Just display the line after you clipped it to make sure its right. It should go from y=0 to y=surface elevation.

Set the monitor to Vertex-maximum for Y-coordinate. This will return the maxium y coordinate of the clipped line.
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Old   July 25, 2008, 07:29
Default Re: plot surface elevation
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George Kakavas
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It really worked exactly as i wanted to... Thank you very much
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Old   June 1, 2010, 11:53
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  #6
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Randre is on a distinguished road
Hi

Someone could explain me how to plot a surface elevation graph in a determined flow time where:

x - x distance;
y - surface elevation elevation.
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