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the classical problem of the flow around a Cylinder Re=35?

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Old   October 15, 2009, 18:53
Question the classical problem of the flow around a Cylinder Re=35?
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Behrang Asgharian
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Dear friends
I have modeled the classic problem of the flow around a cylinder. The textbook says that I should get two laminar vortexes after the cylinder when 15<Re<40 but my results are very similar to the potential flow solution. I employed the laminar viscosity model. Any tips?
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Old   October 16, 2009, 11:38
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Felipe Gutiérrez Donoso
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Check domain dimentions.
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Old   October 16, 2009, 15:06
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teguh hady
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Hi
I Agree with Figd84. We must choose the dimension before. In GAMBIT, the default of size is in meter.
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Old   October 16, 2009, 15:44
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Behrang Asgharian
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Thanks for your responses guys. I actually considered the fact that the mesh is created in meters in Gambit. The good thing is that the default for Fluent is meters.
Any idea?
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Old   October 16, 2009, 19:35
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teguh hady
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15<Re<40 is very small reynold number. It's just like fish moving in water!!! please read this: http://jilawww.colorado.edu/perkinsg...lds_number.pdf
Hope it helps
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