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Yes, the mass flow rate is the same upstream and downstream of an orifice, assuming there are no leaks and the flow is steady. This principle is based on the conservation of mass, which states that mass cannot be created or destroyed in a closed system. However, the velocity and pressure of the fluid will change as it passes through the orifice, resulting in a drop in pressure and an increase in velocity downstream.

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1d ago

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When plumbers say upstream in your plumbing system are they talking about direction of water flow?

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What can you say definitely about the pressure about the opposite sides of an orifice when oil is flowing through it?

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