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Question
What is Reynold’s number? Give its significance.
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Solution
It is a dimensionless number that determines the nature of the flow of fluid through a pipe. Reynold’s number is given by,
Rc = `(ρ"vD")/"η"`
If, Rc < 1000 - Streamline
1000 < Rc < 2000 - Unsteady
Rc > 2000 - Turbulent
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