Abstract
Experimental work was carried out to study the effects of temperature variation in bubbly, bubbly to slug transition. Experiments were carried out in an upward air-water flow configuration. Four sensor conductivity probes and LDA techniques was used together for the measurement of bubble parameters. The aim of this paper is to provide a bubble parameter experimental database using four-sensor conductivity probes and LDA technique for upward air-water flow at different temperatures and also show transition effect in different temperatures under the boiling point.
Highlights
The aim of this paper is to provide a bubble parameter experimental database using four-sensor conductivity probes and Laser Doppler Anemometry (LDA) technique for upward air-water flow at different temperatures and show transition effect in different temperatures under the boiling point
It has been observed that a transition or core peak distribution appears when the percentage of slug bubbles computed in the center of the pipe over the total of computed bubbles is greater than 1%
A methodology to measure the main magnitudes that characterize the two-phase flow is presented in this paper
Summary
These flows can be found in many industrial applications as chemical reactors, nuclear energy production and oil recovery. Theoretical and numerical works have been conducted for different pipe sizes, flow rates and fluid properties. One of the most important key issues in the two-phase flow analysis is the existence of multidimensional interfaces between both phases. The correct behaviour prediction of these interfaces, and its quantification, is one of the frontieras in the theoretical and experimental studies of this kind of flow, and up to now, there is not an effective technique and methodology for the multidimensional interface characterization in two-phase flow measurement. Experimental works play a very important role in the development of new theoretical models and measurement devices
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