Pola Aliran Dua Fase Gas - Fluida Non Newtonian Melalui Belokan Pipa

Haslinda Kusumaningsih, Nurkholis Hamidi, Adriazka Fasa Sabila

Abstract


Two-phase flow applications can be used in chemical reactors, fuel cell and a cooler of electronic devices. Nowadays, the study on multiphase flow is concern with the gas-non Newtonian liquids flow. Since, non-Newtonian liquids commonly used in both industrial and medical applications such as blood flow, polymer and chemical solutions. The viscosity of a non-Newtonian liquid cannot be described by Newton’s law viscosity. The viscosity will affect flow behavior in pipes depends on the rheology of the fluid. The purpose of this study is to further investigate the flow pattern characteristic of gas-Newtonian/non-Newtonian liquid two-phase flows in a normal channel. Ultrapure water, polyacrylamide aqueous solutions (PAM) were used as test fluids, while argon gas as the test gas. Liquid and gas were introduced in T-junction, which placed on the upstream of the test section. In this study, the polyacrylamide concentration was variated on 0.1% wt and 0.4% wt. Moreover, the flow rate of liquids tested were variated on 0.1167 m3/s, 0.183 m3/s, 0.25 m3/s; and 0.283 m3/s. Therefore, the gas tested was variated on 0.083 m3/s, 0.167 m3/s, and 0.25 m3/s. The circular channel and bend pipe were used in this study, which has hydraulic diameter of 25.4 mm. The high-speed video camera was used to record the flow patterns in the bend as the test section. The flow pattern, bubble length, bubble velocity and void fraction were determined by analyzing the video image of the flows. Slug and plug flow patterns mostly appear in this study for each variation of liquids tested. Increasing gas superficial velocity induced the longer bubble. Furthermore, because of the higher viscosity of the non-Newtonian liquid,  the bubble nose of gas-non Newtonian liquid two-phase flow becomes sharper than the bubble nose of gas-Newtonian liquid two-phase flow. 


Keywords


Two-Phase Flow; Non-Newtonian; Flow Pattern; Superficial Velocity; Bubble Length; Void Fraction

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References


SOMCHAI WONGWISES. 2005. Flow pattern, pressure drop and void fraction of two-phase gas-liquid flow in an inclined narrow annular channel. Experimental Thermal and Fluid Science, Vol. 30. pp. 345–354.

KAWAHARA, A., MOHAMED H. MANSOUR, MICHIO SADATOMI, WEN ZHE LAW, HIROKI KURIHARA, HASLINDA KUSUMANINGSIH. 2015. Characteristics of gas-liquid two-phase flow through a sudden contraction in rectangular microchannels. Experimental Thermal and Fluid Science, Vol. 66. Pp. 243-253.

AWALUDDIN, SLAMET WAHYUDI, AGUNG SUGENG WIDODO. 2014. Analisis aliran dua fase (udara-air) melalui belokan 450. Jurnal Rekayasa Mesin., Vol. 5, No. 3, pp. 217-224

YANG, Z.C., BI, Q.C., LIU, B., HUANG, K.X., 2010. Nitrogen/Non-Newtonian Fluid Two-Phase Up-ward Flow in Non-Circular Microchannels. International Journal of Multiphase Flow, Vol. 36, pp. 60–70.

KAWAHARA, A., MORI, A., LAW, W.Z., YONEMOTO, Y., MANSOUR, M.H., & SADATOMI, M., (2016). Two-phase Pressure Drop for Gas and Non-Newtonian Liquid Flows through Circular Micro-channel. Jepang: J-STAGE.

MANSOUR, H. MOHAMED, AKIMARO KAWAHARA, MICHIO SADATOMI. 2015, Experimental Investigation of Gas-non Newtonian Liquid Two-Phase Flow from T-junction Mixer in Rectangular Microchannel. International Journal of Multiphase Flow, Vol 72, pp. 263-274.

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

GARSTECKI, P., FUERSTMAN, M. J., STONE, H. A. dan WHITESIDE, G.M., 2006, Formation of droplets and bubbles in a microfluidic T-junction-scaling and mechanism of a break-up, Lab on a chip, Vol. 2, pp. 437-446.

AGOSTINI, B., REVELLIN, R. dan THOME, J. R., 2008, Elongated bubbles in microchannels. Part I: Experimental study and modeling of elongated bubble velocity, International Journal of Multiphase Flow, Vol. 34, pp. 590-601.

STEIJN, VOLKERT, KREUTZER, MICHIEL dan KLEIJN, CHRIS. 2007. PIV study of the formation of segmented flow in microfluidic T-junctions. Chemical Engineering Science. Vol. 62. Pp. 7505-7514. DOI. 10.1016/j.ces.2007.08.068

ARMAND, A. A., 1946. The resistance during the movement of a two-phase system in horizontal pipes, Izv. Vses. Teplotekh. Inst., Vol. 1, (AERE-Lib/Trans 828) pp. 16-23.




DOI: https://doi.org/10.21776/ub.jrm.2019.010.03.12

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