In open channel flows, the characteristic length commonly used in defining the Reynolds number is the
  • a)
    depth of flow
  • b)
    wetted perimeter
  • c)
    hydraulic radius
  • d)
    area/top width
Correct answer is option 'C'. Can you explain this answer?

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Learners World
Jun 24, 2021
Hydraulic radius is the characteristic length commonly used in defining the Reynolds number.

Hydraulic radius is the characteristic length commonly used in defining the Reynolds number.
Hydraulic radius is the characteristic length commonly used in defining the Reynolds number.