Abstract.
The churn-to-slug flow bifurcations of two-phase (air-water) flow patterns in a 2mm diameter minichannel were investigated. With increasing a water flow rate, we observed the transition of slugs to bubbles of different sizes. The process was recorded by a digital camera. The sequences of light transmission time series were recorded by a laser-phototransistor sensor, and then analyzed using the recurrence plots and recurrence quantification analysis (RQA). Due to volume dependence of bubbles velocities, we observed the formation of periodic modulations in the laser signal.
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Górski, G., Litak, G., Mosdorf, R. et al. Dynamics of a two-phase flow through a minichannel: Transition from churn to slug flow. Eur. Phys. J. Plus 131, 111 (2016). https://doi.org/10.1140/epjp/i2016-16111-x
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DOI: https://doi.org/10.1140/epjp/i2016-16111-x