This paper describes a novel in-line sensor that measures the magnitude and direction of gas flow in a tube. The sensor possesses a unique set of performance characteristics: low detection limit, little resistance to flow, and directional sensitivity. The sensor consists of two hot wire anemometers mounted in a U-shaped tube. Differences in the signals between the two hot wires under low velocity conditions are used to determine the direction of the flow. Calibration curves of flow rate versus measured velocity are used to determine the magnitude of the flow. The sensor has applications in systems that are characterized by naturally driven oscillating flows. [S0098-2202(00)02701-2]
A Novel Technique to Measure the Magnitude and Direction of Flow in a Tube
Contributed by the Fluids Engineering Division of THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS. Manuscript received by the Fluids Engineering Division June 1, 1999; revised manuscript received November 30, 1999. Associate Technical Editor: M. R. Hajj.
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Robinson, A. L., and Sextro, R. G. (November 30, 1999). "A Novel Technique to Measure the Magnitude and Direction of Flow in a Tube." ASME. J. Fluids Eng. March 2000; 122(1): 186–188. https://doi.org/10.1115/1.483249
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