Dynamics of Two-Phase Flow through a Minichannel: Fourier and Multiscale Entropy Analyses

Abstract:

By changing a air flow rate of the two-phase (air-water) flow through a minichannel weidentified aggregation and partitioning of air bubbles and slugs of different sizes and air bubble arrangement into periodic patterns. The identification of these spatio-temporal behaviour was doneby digital camera. Simultaneously, we provide the detailed studies of these phenomena by using thecorresponding sequences of light transmission time series recorded by a laser-phototransistor sensor.To distinguish the instabilities in air slags and their breakups and aggregations we used the Fourierand multiscale entropy analysis.

• Periodical: Applied Mechanics and Materials (Volume 791)
• Pages: 217-223
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.791.217
• Online since: September 2015
• Authors: Grzegorz Górski, Grzegorz Litak*, Romuald Mosdorf, Andrzej Rysak
• Keywords: Bubble Dynamics, Multiscale Entropy, Two-Phase Flow

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