Originally posted by SlartyBartFast
Think of a sphere as identical but with all the flow nastiness happening in 3d.
Think of a sphere as identical but with all the flow nastiness happening in 3d.
BJJB
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If only things were that simple. Where a cylinder tends toward a periodic shedding of vortices (an example of which is seen in the cylfast.mov video), a sphere's vortex shedding pattern rapidly becomes chaotic as the Reynolds number increases.
BJJB -
Simple question
What type of R number are we looking for in order to do this test correctly? I should try to do a model of this in my CFD softwear when I get some time.Last edited by SLICEnDICE; 01-19-2004, 01:09 PM.Comment
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That's why I said "think of". Regardless of cyclical or random/chaotic shedding, the videos very clearly demonstrate vortex shedding.Originally posted by bjjb99
If only things were that simple.
It doesn't take much, if any, intelligence to infer that even the forces in the video would lead to erratic flight and that shperes would be obviously more complex.
The behavious at high Reynold's numbers can simplistically be explained as a multipler of the erratic behaviour.Comment
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