Abstract
An upward isothermal co-current air-water flow in a vertical pipe (52 mm inner diameter) has been experimental investigated. Local measurements of void fraction, interfacial area concentration (IAC), interfacial velocity, and Sauter mean diameter were made using a double-sensor conductivity probe. Liquid velocity and turbulence intensity were measured using laser Doppler anemometry (LDA). Different air-water flow configurations was investigated for a liquid flow rate ranging from 0.491 to 0.981 m/s and a void fraction up to 15%. For each two-phase flow configuration 25 radial positions and 3 axial locations were measured by the conductivity probe methodology, and several radial profiles were measured with LDA at different axial positions.
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