论文信息 - Experimental study of ultrasonic characteristics in air-water bubbly flows

Experimental study of ultrasonic characteristics in air-water bubbly flows

In the oil industry there is a need to determine the dispersed phase holdup in multiphase flows using noninvasive, fast responding techniques; ultrasonic techniques apparently can fulfill these requirements. In this regard, the proposed paper analyzes the ultrasonic signals obtained through vertical, upward air-water flows in the zero to 14% void fraction range. Initially, the experimental apparatus and the flow patterns observed are discussed. Next follows a discussion of the ultrasonic signals characteristics and the trends in the transit time and attenuation. A new transit time definition is proposed that could be used for the characterization of two-phase flows.

R.D.M. Carvalho | O. J. Venturini | F. Neves-Jr | L.V.R. Arruda | F. A. França

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