What question did this study set out to answer?

This study aims to explore the fluctuation characteristics of pressure differences in slug flow within T-junction tubes using air and water.

July 1, 2018Open Access

Experimental Study on the Pressure-Difference Fluctuation Characteristics of Slug Flow in Horizontal T-Junction Tube

Key Points

This study aims to explore the fluctuation characteristics of pressure differences in slug flow within T-junction tubes using air and water.
Conducted experiments in two types of transparent horizontal PMMA T-junction tubes with varying diameters.
Collected and processed data using the LabVIEW platform to analyze flow characteristics.
Examined probability density function (PDF) and power spectral density (PSD) of the slug flow.
Identified distinct probability density functions for the slug flow across different tube diameters.
Observed variations in both PDF and PSD characteristics in response to differential pressure changes.
Established reliable identification methods for slug flow patterns beneficial for flow pattern recognition.

Abstract

In practice, two-phase fluids may be often mixed or separated in T-junction tube, and alternating flow of liquid plug and gas plug may cause its working condition to be complex and changeable, so the study on it needs to be improved at present. Based on air and water, the characteristics of response to differential pressure of gas-liquid two-phase slug flow in two kinds of transparent horizontal T-junction PMMA tubes with different diameters are studied in depth and systematically, and data collection and processing are conducted by LabVIEW platform to obtain the probability density function (PDF) and the power spectral density function (PSD) characteristics of slug flow in different periods and forms. All characteristics provide reliable slug flow identification for flow pattern recognition.

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