A 1 mm _0.5 mm rectangular-shaped orifice is used to throttle hydraulic fluid that is flowing from a 20 MPa pressurized hose to a reservoir at atmospheric pressure. Using the classical orifice (equation with a discharge coefficient of 0.62 and a fluid density of 850 kg/ ), calculate the volumetric flow rate through this passage. What is the Reynolds number that characterizes this flow rate assuming that the fluid viscosity is 0.01 Pa-s? Is this flow laminar or turbulent? Does the orifice equation apply? Why or why not?
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