Void Fraction Measurement Techniques for Gas-Liquid Bubbly Flows in Closed Conduits; A Literature Review

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by Mahmood Naghash, Bechtel Corp, Gaithersburg, United States,

Document Type: Proceeding Paper

Part of: Fundamentals and Advancements in Hydraulic Measurements and Experimentation:

Abstract: This paper provides a review of void fraction measuring techniques for gas-liquid bubbly flows in closed conduits with emphasis on the suitability of these methods for air-water bubbly flows in reaeration applications. The techniques addressed include Electrical Conductance Probes, Radiation Attenuation Techniques, Optical Probes, and Thermal Anemometers. Each technique is described and the principles of measurement and applications are provided.

Subject Headings: Flow measurement | Gas flow | Probe instruments | Air flow | Confined flow | Water flow | Voids | Conduits |

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