Survey of pipeline flowmeters

Brain, Tracy; Scott, R W W

doi:10.1088/0022-3735/15/10/001

Cited by 24 publications

(6 citation statements)

References 6 publications

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“…consequent mechanical effects, such as the rate of rotation of a rotor mounted in the stream; 2. pressure changes; and 3. the rate of heat transfer from a heated body in the air stream [12].…”

Section: The Measurement and Control Of Gas Flow 931 Flowmeteringmentioning

confidence: 99%

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Measurement of CO2 assimilation by plants in the field and the laboratory

Long¹,

Hällgren²

1993

Photosynthesis and Production in a Changing Environment

209

132

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Section: The Measurement and Control Of Gas Flow 931 Flowmeteringmentioning

confidence: 99%

“…Furthermore, the design is not well suited to the production of an electrical output and hence computerised recording. Alternative mechanical methods of flow measurement include turbine meters and pressure drop measurement across a tube constriction [6,12].…”

Section: The Measurement and Control Of Gas Flow 931 Flowmeteringmentioning

confidence: 99%

Measurement of CO2 assimilation by plants in the field and the laboratory

Long¹,

Hällgren²

1993

Photosynthesis and Production in a Changing Environment

209

132

View full text Add to dashboard Cite

“…Measurement of fluid velocities is important in industries as well as in research and several types of fluid velocitimeters have been known to exist for quite some time. Fluid velocitimeters may be arbitrarily classified by their principles of operation, which include measurement of volumetric flow rate, particle and heat transport, viscous drag force, hydrodynamic pressure, centrifugal and Coriolis force, electromagnetic induction, Doppler shift (ultrasonic and optical), ultrasonic beam deflection and through the generation of vortices (Brain andScott 1982, Jackson et a6 1989).…”

Section: Introductionmentioning

confidence: 99%

Development of a sensitive hanging wire velocimeter

Roy

Chatterjee

Saha

1994

Meas. Sci. Technol.

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A simple but accurate hanging wire velocitimeter for measuring flow velocities of tluids has been designed, based on the drag force detection method. It is found to be very sensitive for measuring velocities of liquids as low as 0.0002 m s-' for measuring streaming velocities in acoustically driven flows of liquids like water, propanol and silicone oil. The maximum streaming velocity measured with this velocitimeter was about 0.035 m s-'.

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“…Commonly employed techniques comprise the radioactive tracer method [1], optical techniques [2], electromagnetic methods [3,4], and conventional mechanical approaches [5,6]. Use of radioactive tracers provides a direct measurement of particle velocity, but the technique requires a nuclear power source, which limits the technique to research applications.…”

Section: Introductionmentioning

confidence: 99%

Development of acoustic flow instruments for solid/gas pipe flows

Sheen¹,

Raptis²

1986

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Two nonintrusive acoustic flow sensing techniques are reported. One technique, passive in nature, simply measures the bandpassed acoustic noise level produced by particle/particle and particle/wall collisions. The noise levels, given in true RMS voltages or in autocorrelations, show a linear relationship to particle velocity but increase with solid concentration. Therefore, the passive technique requires calibration and a separate measure of solid concentration before it can be used to monitor the particle velocity. The second technique is based on the active cross-correlation principle. It measures particle velocity directly by correlating flow-related signatures at two sensing stations. The velocity data obtained by this technique are compared with measurements by a radioactive-particle time-of-flight (TOF) method. A multiplier of 1.53 is required to bring the acoustic data into agreement with the radioactive TOF result. The difference may originate from the difference in flow fields where particles are detected. The radioactive method senses particles mainly in the turbulent region and essentially measures average particle velocity across the pipe, while the acoustic technique detects particles near the pipe wall, and so measures the particle velocity in the viscous sublayer. Both techniques were tested in flows of limestone and air and 1-mm glass beads and air at the Argonne National Laboratory Solid/Gas Test Facility (SGFTF). The test matrix covered solid velocities of 20 to 30 m/s in a 2-in. pipe and solid-togas loading ratios of 6 to 22.

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Survey of pipeline flowmeters

Cited by 24 publications

References 6 publications

Measurement of CO2 assimilation by plants in the field and the laboratory

Measurement of CO2 assimilation by plants in the field and the laboratory

Development of a sensitive hanging wire velocimeter

Development of acoustic flow instruments for solid/gas pipe flows

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