question 2 a pressure difference ap is suddenly imposed across a recta
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Question 2: A pressure difference AP is suddenly imposed across a rectangular channel of length L width w and height h where h « w « L./6 (a) Estimate the
Reynolds number of the flow for a fluid of density p and viscosity µ. (b) Estimate the time scale ↑ over which the flow is unsteady. (c) Estimate the magnitude of the viscous traction on the walls of the channel.