Question: SAE 10W oil at 20C flows through a straight horizontal pipe. The pressure gradient is a constant 400 Pa/m. (a) What is the appropriate pipe

SAE 10W oil at 20°C flows through a straight horizontal pipe. The pressure gradient is a constant 400 Pa/m.
(a) What is the appropriate pipe diameter D in cm if the Reynolds number ReD of the flow is to be exactly 1000?
(b) For case a, what is the flow rate Q in m3/h?

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