THERMAL SCIENCE

International Scientific Journal

Charthankar Shantanu Babasaheb

,

Autee Aruntukaram

ON THE PREDICTION OF EXPERIMENTAL TWO-PHASE PRESSURE DROP THROUGH MICRO-CHANNELS

ABSTRACT
In many different industrial sectors, including power plants, petroleum refineries, and process industries, two-phase flow is an essential element. It is critical to anticipate the pressure drop in two-phase flow accurately which is dependent on number of factors, including the mass fluxes of the phases, the channel’s orientation, cross-section, and size. An experimental investigation of adiabatic two-phase air-water flow in micro-channels is presented in this paper. Acrylic rectangular micro-channel with hydraulic diameter, Dh, of 0.367 mm, 0.411 mm, 0.554 mm at horizontal orientation for the mass flux ranging from 290-1310 kg/m2s were used for conducting the experimental study. A few of the already known correlations were compared to the experimental two-phase pressure drop. Evaluation showed that the current correlations were insufficient to forecast the experimental findings. A new empirical correlation in terms of fluid characteristics and dimensionless numbers was developed based on the experimental results. The proposed correlation matches the current experimental results quite well. Most of the data was found to lie within the ±25% error zone.
KEYWORDS
microchannels, two-phase flow, Frictional pressure drop, Gas and liquid superficial velocity, Mean Absolute Error
PAPER SUBMITTED: 2024-10-03
PAPER REVISED: 2025-01-03
PAPER ACCEPTED: 2025-01-10
PUBLISHED ONLINE: 2025-03-08
DOI REFERENCE: https://doi.org/10.2298/TSCI241003031B
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2025, VOLUME 29, ISSUE No. 5, PAGES [3791 - 3800]
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On the prediction of experimental two-phase pressure drop through micro-channels

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