Simultaneous laser-induced fluorescence and capacitance probe measurement of downwards annular gas-liquid flows

2021 ◽  
pp. 103665
Author(s):  
Victor Voulgaropoulos ◽  
Andrius Patapas ◽  
Steven Lecompte ◽  
Alexandros Charogiannis ◽  
Omar K. Matar ◽  
...  
Keyword(s):  
Laser Induced Fluorescence ◽  
Probe Measurement ◽  
Capacitance Probe ◽  
Liquid Flows

Laser-induced fluorescence (LIF) studies of liquid–liquid flows. Part I: Flow structures and phase inversion

2006 ◽  
Vol 61 (12) ◽  
pp. 4007-4021 ◽  
Author(s):  
Lan Liu ◽  
Omar K. Matar ◽  
Christopher J. Lawrence ◽  
Geoffrey F. Hewitt
Keyword(s):  
Phase Inversion ◽  
Laser Induced Fluorescence ◽  
Flow Structures ◽  
Liquid Flows

scholarly journals Detection of Interfacial Structures in Inclined Liquid-Liquid Flows Using Parallel-Wire Array Probe and Planar Laser-Induced Fluorescence Methods

Sensors ◽  
2020 ◽  
Vol 20 (11) ◽  
pp. 3159 ◽  
Author(s):  
Lusheng Zhai ◽  
Zihan Meng ◽  
Jie Yang ◽  
Hongxin Zhang ◽  
Ningde Jin
Keyword(s):  
Cross Sections ◽  
High Speed ◽  
Wire Array ◽  
Laser Induced Fluorescence ◽  
Parallel Wire ◽  
Planar Laser Induced Fluorescence ◽  
Interfacial Structures ◽  
Planar Laser ◽  
Liquid Flows ◽  
Inclined Pipes

Flows of two immiscible liquids through inclined pipes are often encountered in industrial processes. The interfacial characteristics in inclined pipes are of significance for understanding the mechanism of flow pattern transition and modeling the flow parameters. This paper developed a novel experimental technique to access the interface characteristics of liquid-liquid flows, during which optical and electrical methods were successfully combined by matching the refractive index and conductivity of the flows. A planar laser-induced fluorescence (PLIF) system was set up with a continuous laser and high-speed camera. Organic and aqueous phases were chosen to match refractive indices. The liquid-liquid interface in the middle of the pipe could be clearly visualized by the PLIF system. Meanwhile, two conductance parallel-wire array probes (CPAPs) were designed to reconstruct the liquid-liquid interfaces at upward and downward pipe cross-sections. The performances of the CPAP were validated using the PLIF results and employed to investigate the liquid-liquid interfacial structures. The interfacial shape and its instability were uncovered using the reconstructed interfaces by the CPAPs.

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