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Assertion (A): Computational methods have not displaced the wind tunnel.

Reason (R): Transition and separation still rest on models that require experimental calibration.

Select the correct answer from the options below.

  • A.A is false but R is true
  • B.Both A and R are true, and R is the correct explanation of A
  • C.Both A and R are true, but R is not the correct explanation of A
  • D.A is true but R is false

Answer: B

Both statements are true and the second is the reason for the first. Attached flows are computed well, but the phenomena that decide maximum lift, buffet and drag creep are exactly the ones the turbulence models handle least reliably. Tunnel and computation are used together.

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