Night Owl Chatterboxes - Part XLVIII!

• the Bear

  13 Dec 07, 22:36

  pass
  
  

  Originally posted by fudgester:

  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.

• laurence82

  13 Dec 07, 22:38

  urm
  
  A*
  
  *me stamps a cute small teddy bear chop on fudgie's paper*
• Meia Gisborn

  13 Dec 07, 22:43

  Originally posted by fudgester:

  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.

  So, the setup that's pictured, is it just a spring inserted into a transparent tube?
• fudgester

  13 Dec 07, 22:49

  Originally posted by Meia Gisborn:

  So, the setup that's pictured, is it just a spring inserted into a transparent tube?

  ....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

  13 Dec 07, 22:51

  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'
• laurence82

  13 Dec 07, 22:51

  Originally posted by fudgester:

  ....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.
  
  

  just like the Russians and the pencil eh?
• the Bear

  13 Dec 07, 22:53

  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"
  
  

  Originally posted by sbst275:

  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'

• fudgester

  13 Dec 07, 22:54

  Originally posted by laurence82:

  just like the Russians and the pencil eh?

  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

  13 Dec 07, 22:56

  Originally posted by fudgester:

  ....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 I 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 me so long to come up with that idea.
  
  

  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!
• SevenEleven

  13 Dec 07, 23:46

  good evening folks
• the Bear

  13 Dec 07, 23:47

  it's early in India, it's kinda late here
• SevenEleven

  13 Dec 07, 23:50

  2 1/2 hours difference
• the Bear

  13 Dec 07, 23:50

  yeah.. got take many pics?
• SevenEleven

  13 Dec 07, 23:52

  yes. alot. will sho you some of the better one when i come back.
• SevenEleven

  13 Dec 07, 23:53

  will need to wake up by 4.30am tomorrow
• the Bear

  13 Dec 07, 23:55

  go and sleep lah.. coz i'm going to also
  
  enjoy yourself
• SevenEleven

  13 Dec 07, 23:55

  need to be really careful with what we eat. already 1 causalty down from food poisoning
• the Bear

  13 Dec 07, 23:55

  hmmm.. but everyone eating the same thing, one kena?
  
  

  Originally posted by SevenEleven:

  need to be really careful with what we eat. already 1 causalty down from food poisoning

• SevenEleven

  13 Dec 07, 23:55

  good night then
• the Bear

  13 Dec 07, 23:56

  yeah.. goodnight..
  
  i am so burnt out
  
• the Bear

  14 Dec 07, 20:26

  so effing tired
  
  but home
  
  and almost on leave
  
  sunday a no-brainer day at work and it's leave!
• Fatum

  14 Dec 07, 20:29

  
  gonna quench my thirst at holland V later ... anyone around the place ? ...
• the Bear

  14 Dec 07, 20:30

  guess what?
  
  i'm too tired to go out
  
  yes.. i am that burnt out..
  
  maybe next week, see if we're not burnt out or braindead or whatever, let's go eat
  
  

  Originally posted by Fatum:

  gonna quench my thirst at holland V later ... anyone around the place ? ...

• stellazio

  14 Dec 07, 20:31

  overslept on my afternoon nap..
  
  tonight cant sleep.
  
  tmr got match..
  
  gg..
• the Bear

  14 Dec 07, 20:35

  this is a fricken hilarious pic