Calculating flowrate through long, straight pipe in a zone of complete turbulence is easy using standard fluid mechanics equations.
Calculating flowrate through long, straight pipe in a zone of complete turbulence is easy using standard fluid mechanics equations. In most industrial process designs, real piping systems lie in the area known as the transition zone, meaning that the friction factor depends on both the Reynolds (Re) number of the flow and the relative roughness of the pipe. Conversely, most real piping systems have valves and fittings that make calculating flowrate more difficult.
This article presents equations that accurately calculate flowrate through valves, fittings and pipe under a turbulent flow regime (Re > 4,000) in systems where the energy loss is then the sum of the losses of pipes and fitting
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