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Gas–Liquid Two-Phase Flow in a Hydraulic Braking Pipeline: Flow Pattern and Bubble Characteristics

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Publicado en:Fluids vol. 10, no. 8 (2025), p. 196-219
Autor principal: Li, Xiaolu
Otros Autores: Yiyu, Ke, Xu Cangsu, Sun, Jia, Liang Mingxuan
Publicado:
MDPI AG
Materias:
Beijing China
China
Flow distribution
Braking
Annular flow
Two phase flow
Hydraulic equipment
Heat
Bubbles
Visualization
Pattern recognition
Plugs
Unsteady flow
Flow pattern
Velocity
Cavitation
Cameras
Research methodology
Viscosity
Braking systems
High speed cameras
Sensors
Power supply
Algorithms
Slug flow
Multiphase flow
Hydraulics
Acceso en línea:Citation/Abstract
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Resumen:An in-depth analysis of the two-phase flow in a hydraulic braking pipeline can reveal its evolution process pertinent for designing and maintaining the hydraulic system. In this study, a high-speed camera examined the two-phase flow pattern and bubble characteristics in a hydraulic braking pipeline. Bubble flow pattern recognition, bubble segmentation, and bubble tracking were performed to analyze the bubble movement, including its behavior, distribution, velocity, and acceleration. The results indicate that the gas–liquid two-phase flow patterns in the hydraulic braking pipeline include bubbly, slug, plug, annular, and transient flows. Experiments reveal that bubbly flow is the most frequent, followed by slug, plug, and transient flows. However, plug and transient flows are unstable, while annular flow occurs at a wheel speed of 200 r/min. Bubbles predominantly appear in the upper section of the pipeline. Furthermore, large bubbles travel faster than small bubbles, whereas slug flow bubbles exhibit higher velocities than those in plug or transient flows.
ISSN:2311-5521
DOI:10.3390/fluids10080196
Fuente:Materials Science Database