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The Pohlhausen method solves the momentum integral equation by

  • A.Solving the full Navier-Stokes equations numerically
  • B.Assuming the layer is always turbulent
  • C.Neglecting the wall shear stress
  • D.Assuming a polynomial velocity profile

Answer: D

Assuming a quartic profile whose shape is governed by a single parameter reduces the problem to an ordinary differential equation that can be integrated along the surface. The result is quick and gives a usable separation prediction, though it is less accurate than a full differential calculation.

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