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Nilanjan Bhowmick AIR 3, CSIR NET (Earth Science)
Sushmita Best Answer
Answer: A Darcy's law is valid for laminar flow. Reynold's number (R) is the dimensionless ratio of inertial and viscous force. For channel or the pipe- R< 2000(laminar) & R>2000(turbulent) For groundwater flow-R<1(laminar)
For groundwater flow - R<1(laminar)