Photographic Technique Application to the Determination of Void Fraction in Two-Phase Flow Boiling in Mini Channels

Krzysztof Płaczkowski; Mieczysław Poniewski; Mirosław Grabowski; Sławomir Alabrudziński

doi:10.4028/www.scientific.net/AMM.797.299

Paper Titles

Experimental Data Acquisition System for Flow Boiling in Mini Channels
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Vibration Transmission Loss of Auxetic Lattices
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Comparative Analysis of Forms of Lateral Baffles for Road Tanks
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Photographic Technique Application to the Determination of Void Fraction in Two-Phase Flow Boiling in Mini Channels
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Finite Element Modelling of Contact Interaction between Spherical Indenter and Elastic-Plastic Body
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The Behaviour of the Bed in Rotating Drum for Five Different Drum Diameters
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Study of Heat Transfer in Pneumatic Pulsator
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Air Evacuation from the Pressure Accumulator during Work Cycle of the Pneumatic Pulsator
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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 797Photographic Technique Application to the...

Photographic Technique Application to the Determination of Void Fraction in Two-Phase Flow Boiling in Mini Channels

Abstract:

The study deals with experimental investigations into heat transfer flow boiling in rectangular, vertical and horizontal mini-channels. The dedicated measurement system was designed to observe flow boiling in the mini-channel. The main task of the system is to record images of two-phase flow with a high-speed video camera, which is equipped with the synchronous movement system. The data, in the form of the footage of two-phase flow structures, were subjected to the analysis with the scripts, developed for that purpose in the MathWorks Matlab 2010b environment. The scripts allowed the determination of void fraction for each pattern of two-phase flow structures observed, at various heat fluxes and various volume fluxes, for two spatial orientations of the mini-channel: vertical and horizontal.

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Periodical:

Applied Mechanics and Materials (Volume 797)

Pages:

299-306

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.797.299

Citation:

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Online since:

November 2015

Authors:

Krzysztof Płaczkowski, Mieczysław Poniewski, Mirosław Grabowski, Sławomir Alabrudziński

Keywords:

Flow Boiling, Mini-Channel, Photographic Analysis, Two-Phase Flow Structures, Void Fraction

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References

[1] Claudio A., Acuña P., 2007, Measurement techniques to characterize bubble motion swarms, McGill University, Canada.

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[2] Płaczkowski K., 2015, MA thesis – Photographic analysis of two-phase flow boiling in rectangular vertical mini-channel with high-speed video camera (in Polish), Warsaw University of Technology – Faculty of Civil Engineering, Mechanics and Petrochemistry.

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[3] Poniewski M.E., Alabrudziński S., Grabowski M., Hożejowska S., Mosdorf R., Płaczkowski K., 2015, Technical report on the implementation of the research project N N512 477339 – Analysis of heat and momentum transfer in the liquid flow boiling in mini-/micro-channels with different spatial orientation (in Polish), Warsaw University of Technology – Faculty of Civil Engineering, Mechanics and Petrochemistry.

DOI: 10.4028/www.scientific.net/amm.797.263

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