![]() ![]() ![]() M 2 = mass flow rate at the outlet of the orifice plate (kg/s) M 1 = mass flow rate at the inlet of the pipe (kg/s) This principle can be expressed mathematically as: ![]() Source: Mbeychok/CC ĭue to the steady-flow nature of the fluid flow, the conservation of mass principle requires that the total rate of mass entering through the inlet of this pipe equals the total rate of mass exiting through the outlet. Source: pichitstocker/Adobe Stock Fluid flow in pipe and the conservation of massĬonsider a steady flow of fluid in a pipe of diameter d 1 that is constricted to a flow area of diameter d 2 using an orifice plate, as shown in Figure 2.įigure 2: Fluid flow in a pipe that is constricted using an orifice plate. This article will cover the fundamental principles and calculations for correlating flow rate through an orifice plate.įigure 1: An inspector measuring the flow area diameter of an orifice plate. As simple as this device seems to operate, a lot of work goes into designing and specifying orifice plates for specific applications. ![]()
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