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Vortex Shedding Frequency and Volume Flow Rate
The vortex shedding frequency around a bluff body and the flow rate
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Vortex Shedding Frequency
The vortex shedding frequency around a bluff body can be calculated as
f = Sr v / d (1)
where
f = vortex shedding frequency (Hz)
Sr = Strouhal number (dimensionless)
v = flow velocity (m/s)
d = bluff body diameter
Volumetric Flowrate
The volumetric flowrate from the shredding frequency can be calculated as
q = A f / k (2)
where
q = volumetric flowrate (m3/s)
A = cross sectional area of the vortex orifice (m2)
k = a constant for all fluids given design of meter
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Related Topics
- Fluid Flowmeters - Flow metering basics - Orifice, Venturi, Flow Nozzles, Pitot Tubes, Target, Variable Area, Positive Displacement, Turbine, Vortex, Electromagnetic, Ultrasonic Doppler, Ultrasonic Time-of-travel, Mass Coriolis, Mass Thermal, Weir V-notch, Flume Parshall and Sluice Gate flow meters and more
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Related Documents
- Strouhal Number - An introduction to and a definition of the Strouhal Number
- Types of Fluid Flow Meters - An introduction to different types of fluid flowmeters - Orifices, Venturies, Nozzles, Rotameters, Pitot Tubes, Calorimetrics, Turbine, Vortex, Electromagnetic, Doppler, Ultrasonic, Thermal, Coriolis
- Vortex Flowmeters - a Tutorial - An introduction to vortex flowmeters
