Danckwerts developed the ____________________ theory?
Correct answer: C. Surface renewal
- A. Penetration
- B. Film
- C. Surface renewal
- D. None of these
Explanation
Danckwerts proposed the surface-renewal theory, which treats turbulent eddies as continually replacing elements of liquid at the interface. The penetration theory is associated with Higbie, while film theory uses a more persistent stagnant-film model.
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