Tim Pulaski

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Tim Pulaski MER332
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Persistent Myths

• Quicksand will pull you down to a goopy death.
• Possibility of pulling yourself out with aid of a
  vine or another person.

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What is Quicksand?

• Name derived from old meaning of quick
• Similar to quicksilver Mercury
• Suspension of fine granular matter in water
• Such as sand, clay, and salt
• Considered a dilatant fluid
• Shear-thickening

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(No Transcript)
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Newtonian Fluid
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Dilatant Fluid
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Ostwaldde Waele Power Law
where K is the flow consistency index (SI
units Pasn), ?u/?y is the shear rate, (SI unit
s-1) n is the flow behaviour index
(dimensionless).
http//wikipedia.org/
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DEMONSTRATION
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Questions?Comments?Gifts?
Interesting Find Dry Quicksand

• http//stilton.tnw.utwente.nl/dryquicksand/video.h
  tm