# ANALISA KECEPATAN SLUG ALIRAN DUA FASE DI DOWNSTREAM T-JUNCTION MINICHANNEL HORIZONTAL DENGAN RADIUS BELOKAN (r/dh) 0.7

## DOI:

https://doi.org/10.21776/jrm.v13i3.1432## Keywords:

T-Junction, Bend, Slug Velocity, Minichannel, Rectangular Channel, Image Processing## Abstract

*Uneven distribution of the phases between in the main channel when two-phase flow passes through the T-junction it can cause the formation of slug flow which affects performance in the downstream area. The slug is formed due to the acceleration of the gas phase moving towards an average or stable velocity. The bend radius of the T-junction affects the formation of slug because the radius can increase the velocity of the gas phase. Research on the slug velocity was carried out in the downstream region of the horizontal mini channel T-junction. The working fluid used is air as the gas phase and water. The flow pattern and velocity slug analysis were carried out by visualizing the flow at a distance of ±30 mm from the T-junction, that works as a mixer of the working fluid. High-speed camera is used to record video and processed in the form of image processing with the MATLAB program. Two-phase flow slug velocity analysis conducted in the downstream area of the horizontal minichannel T-junction, it can be concluded that the slug velocity tends to increase linearly with increasing superficial velocity of air and water. Comparison of slug velocity experimentally with the results of calculations using the equations of Fukano and Kariyasaki (1993) and Sudarja et al (2018) shows conformity with less than 10% of error margin, while Nicklin et al (1962) is ±30%.*

## References

SEEMANN, R., BRINKMAN M., PFOHL, T., HERMINGHAUS, S., Droplet based microfluidics. Rep. Prog. Phys. 75. 016601, 2012.

MOGRA A., VERMA S.K., THOMAS. T., Fabrication of square microchannel for experimental inves-tigation of Two-phase flow using conventional machining process, 2016.

ELAZHARY, A. M., H.M. SOLIMAN, Two-pase flow in a horizontal mini-size impacting T-Junction with a rectangular cross-section, Int. J. Multiphase Flow, v. 42, pp. 104-114, 2012.

MOHAMMED H. MANSOUR, AKIMARO KAWAHARA, MICHIO SADATOMI, Experimental investagation of gas-non-newtonian liquid two-phase flow from T-Junction mixer in rectangular microchannel, Int. J. Multiphase Flow, v. 72, pp. 263-274, 2015.

KAWAHARA, A., CHUNG, P.M., KAWAJI, M., Investigation of two-phase flow pattern, void fraction, and pressure drop in a microchannel, Int. J. Multiphase Flow, Vol. 28, pp. 1411-1435, 2002.

KEN YAMAMOTO, SATOSHI OGATA, Drag reduction of slug flows in microchannels by modifying the size of T-junction, Int. J. Multiphase Flow, v. 62, pp. 67-72, 2014.

ABHIK MAJUMDER, SAMBIT MAJUMDER, Effect of corner radius of a T-junction mini-square channel on fluid flow and heat transfer in the developing region: The three dimensionals numerical simulation, Procedia Engineering, v. 105, pp. 89-95, 2015.

WARNIER, M.J.F., DE CROON, M.H.J.M., REBROV, E.V., SCHOUTEN, J.C., Pressure drop of gas-liquid Taylor flowin roun micro-capillaries for low to intermediate Reynold numbers, Microfluid Nanofluid, v. 8, pp. 33-45, 2010.

KREUTZER, M.T., KAPTEIJN, F., MOULIJN, J.A., KLEIJN, C.R., HEISZWOLF, J.J., Inertial and interfacial effect on pressure drop of Taylor flowin capillaries, AIChE Journal, v. 51, no. 9, pp. 2428-2440, 2005a.

RAJLAKSHMI NAYAK, OSWALD JASON LOBO, DHIMAN CHATTERJE, SARIT K. DAS, Effect of geometrical parameters on slug behaviour and two-phase pressure drop in microchannel T-junctions, Chemical Engineering & Processing: Process Intensification, v. 130, pp. 76-87, , 2018.

DUCKLER, A.E., HUBBARD, M.G., A model for gas-liquid slug flow in horizontal and near horizon-tal tubes. Ind. Eng. Chem. Fund, v. 14, pp. 337-347, 1975.

DINARYANTO, O., WIDYATAM, A., MAJID, A.I., DEENDARLIANTO., DAN INDARTO., Image Processing analysis on the air-water slug two phase flow in a horizontal pipe. AIP conference proceed-ing, pp. 1737, 2016.

NICKLIN, D.J., WILKE, L.O., AND DAVIDSON, J.P., Two phase flow in vertical tube, Trans. Inst. Chem. Eng, v. 40-1, pp. 61-68, 1962.

TOHRU FUKANO, AKIRA KARIYASAKI , Characteristic of gas-liquid two-phase flow in a cappilary tube, Nuclear Engineering and Design, v. 141, pp. 59-68, 1993.

SUDARJA, AQLI HAQ, DEENDARLIANTO, INDARTO, ADHIKA WIDYAPRAGA, A Drag reduction of slug flows in microchannels by modifying the size of t-junction, Journal of Hidrodinamics, v. 31, no. 1, pp. 102-116, 2019.

KUSUMANINGSIH, H., M. RIAN ALIF MADANI, M. FAKHRI ALFATH, ALDY FRANSTANANATA, DEENDARLIANTO, INDARTO, Karakteristik pola aliran dua fase gas-cairan non-newtonian didalam microchannels berpenampang persegi, Jurnal Rekayasa Mesin, v. 13 no. 2, pp. 563-576, 2022.

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