aj47 Posted December 17, 2007 Share Posted December 17, 2007 Slightly random question but anyway..... As a keen shisha pipe collector I spend a lot of my evenings practicing blowing smoke rings while I watch tv. Recently I've been wondering whether it would be possible to create other shapes i.e. stars or triangles and experimented with making hollow shaped tubes to see if I could make any. As expected it didn't really work. Why is this? Is there a reason why rings seem so stable or are other shapes possible? What do you think? Link to comment Share on other sites More sharing options...
Klaynos Posted December 17, 2007 Share Posted December 17, 2007 it's to do with the flow around objects, smoke rings are formed by flow around a sphere, so it might be possible to create other shapes but it's probably a better option to put something in the flow not just the tube shape. The size of the tube, object and the fluid flow will also make a difference... Link to comment Share on other sites More sharing options...
MrMongoose Posted December 17, 2007 Share Posted December 17, 2007 I've done a couple of experiments and witnessed a crazy man at my University doing several mosre with vortex rings. Although they've only been circular ones, from what I've seen. I'd suggest using a triangular,star or whatever you like shaped rod and moving it quickly through a slightly larger chamber filled with smoke. Link to comment Share on other sites More sharing options...
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