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Old   May 6, 2009, 20:15
Default InkJet Modeling
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HI All
I'm want to do modeling that similar to inkjet and noticed most of the inkjet model example from F3D user website are in cylindrical mesh and not cartesian mesh coordinate. so does it make any differences between the mesh type?
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Old   May 7, 2009, 10:35
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Nope! Just quicker.
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Old   May 7, 2009, 22:35
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is there any guideline to understand what application is more suitable for either cartesian vs cylindrical mesh?
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Old   May 8, 2009, 17:44
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Hi~
When using cylindrical it is suggested to use 2-D with an angle less than 90 degrees. The simulation can still be viewed in 3-D by revolving the results. This speeds up the simulation time but is generally only used for flows that are symmetric. If they are symmetric and cylindrical then cylindrical mesh should be used. A cartesian mesh can also be used but it will have to be 3-D and may take longer to run. When comparing drag on a sphere using a cylindrical mesh 45 degrees and a 1/4 cartesian mesh the results were almost identical but it took longer in cartesian. Hope this helps
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Old   May 11, 2009, 20:50
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Melissa
do you have any paper/document on mesh type comparison that can share with me?
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Old   May 12, 2009, 11:31
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No. I don't have any papers but it would be good. As a general rule if the problem is axisymmetrical use cylindrical. If you are unsure test it against a cartesian.
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Old   May 12, 2009, 20:26
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noted and thanks for the inputs.
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