The forgotten art of Swear Driven Development

Why are fluids so complicated?

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It may surprise you to learn that despite the ubiquity of flying machines in the 21th century, it only takes a few repetitions of “how?” to reduce explanations of flight to frustrated handwaving. Things fly (or swim) by pushing around a “fluid”, and fluids have a mischievous way of appearing tame in some settings and intractably unruly in others.

  • Navier-Stokes is beautiful and terrible
  • The turbulence problem
  • Our intuitions work against us
  • Crude yet effective empirical models
  • Fortunately, computers