fudgester SG Woohoo... qualitative proof that helical corrugations will induce a swirl in laminar pipe flows! *me does the robot*
SBS3625D SG I can't believe I had to re-look at physics on my ship. Wtf, they tell me, venturi effect blah blah causes low pressure causing suction points at where where where.
fudgester SG The thing is.... no one has ever tested this under really laminar conditions. The Reynolds number (the measure of turbulence) which was used in previous experiments was on the order of 150 to 20000.... mine's less than 10. In this project, I'm out to test whether helical flow geometry can be used as a passive means of mixing highly viscous liquids.
fudgester SG ....yes. My prof and I spent six weeks thinking about how to create a tube with helical corrugations carved into the inner wall (just like the rifling of a rifle barrel). The thing is, we need to be able to control the pitch of the corrugations. We were just about to give up.... then we came up with the stupidly simple idea of simply creating helical projections instead by inserting a stainless steel spring into a perspex tube. Can't believe it took us so long to come up with that idea.
sbst275 SG Watching Current Affairs prog now PRC cannot believe the greenhouse gas they produce is causing the eventual disruction of the earth Same goes to the USA but because of 'economic progress'
the Bear SG it's not they can't believe it but they want someone else to pay for cleaning it up.. it's called "externalising the costs"
fudgester SG Yeah... guess you could say that. Anyway, got to go now.... another long day at the lab tomorrow. *me mysteriously disappears in a puff of smoke*
Meia Gisborn SG Actually, that's a great idea you came up with. You're able to change the twist rate of the "projections" simply by inserting a different spring. And the cost is next to nothing too. Sometimes, the best solutions are the simplest!
