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For the Blasius laminar profile, the shape factor is nearest to

  • A.1.00
  • B.5.00
  • C.2.59
  • D.1.40

Answer: C

With \( \delta^* = 1.721x/\sqrt{Re_x} \) and \( \theta = 0.664x/\sqrt{Re_x} \), the ratio is \( 1.721/0.664 = 2.59 \). A turbulent layer comes in nearer 1.4, and a laminar layer climbing past about 3.5 is on the point of separating.

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