Fluid Mechanics seventh edition by Frank M. White · Problem 6.21

Viscous Flow in Ducts — Frank M. White

Physics — Fluid Mechanics · bernoulli-obstruction-meters

Problem

We want to meter the volume flow of water (ρ=1000\rho = 1000 kg/m3^3, ν=1.02×10−6\nu = 1.02 \times 10^{-6} m2^2/s) moving through a 200-mm-diameter pipe at an average velocity of 2.0 m/s. If the differential pressure gage selected reads accurately at p1−p2=50,000p_1 - p_2 = 50{,}000 Pa, what size meter should be selected for installing (a) an orifice with DD:12D\frac{1}{2}D taps, (b) a long-radius flow nozzle, or (c) a venturi nozzle? What would be the nonrecoverable head loss for each design?

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