In my case water is flowing around the tube . I want to draw the graph between angle and water film thickness.. Can anyone please tell me how to define film thickness as Y variable to plot the chart ?
Create radial rakes, say 12, for every 30 degrees, and make a contour plot by selecting the these rakes as surfaces of interest. Then export the data, which you can use them to plot.
@ Gorle Jagan .. thanks for your reply. I understood about this radial rakes but can you tell me in detail about this contour plot... like by taking which property should I make these contours?
Depends on your interest.
Do you want to know the velocity variation around the tube, or is it a two-phase model so that you want to see the separation of water from air around the tube? If you use a two-phase model, use volume fraction of water to plot.
yeah this two phase flow, I used VOF method in this. I want to know how water film thickness is varying around the circumference which is flowing around the tube ( not inside).
Then you can plot the contours of volume fraction, export the data and then see where the volume fraction of water around the cylinder is changing from 1 to non-unit value. Corresponding radial coordinate gives you film thickness.
Thanks Gorle your answers are really helpful.After export I am getting attached table . Can you once have a look for this .And is Z is the radial coordinate here which will give me thickness of water film as I am doing 2-D analysis only?
If you create 12 rakes (not lines) with say 50 points, then export this contour plot by selecting only the rakes, then you will see rake 1, rake 2 .. rake 12 data files. Then, identify that radial coordinate on each rake where the contour changes from yellow to blue. Subtract the cylinder radius from this. You will get the film thickness.
Please how can I get the droplet size or droplet size distribution for a disintegrating melt film. I have used a vof model to capture the interface in fluent . ( See image)
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