Karakteristik Pola Aliran Dua Fase Gas-Cairan Non Newtonian Di Dalam Microchannels Berpenampang Persegi
Penulis/Author
HASLINDA K (1); M.RIAN ALIF MADANI (2); MUHAMMAD FAKHRI A (3); ALDY FRANSTANATA R (4); Prof. Dr. Eng. Ir. Deendarlianto, S.T., M.Eng. (5); Prof. Dr. Ir. Indarto, DEA., IPM., ASEAN Eng. (6)
Tanggal/Date
2022
Kata Kunci/Keyword
Abstrak/Abstract
The aim of this study is to investigate the characteristics of gas-nonNewtonian liquids flow patterns in square microchannels. The microchannels that used in this study was made by acrylic material with horizontal orientation and the side length of 8x10-4 m. Water, Air, Carboxymethyl Cellulose 0.2%wt (CMC 0.2%wt) aquoeus solution, and Xanthan Gum 0.2%wt (XG 0.2%wt) aquoeus solution were used in this study as the liquid test. Moreover, nitrogen gas was used as gas test. The liquid superficial velocity was varied of 0.1-1 m/s. Then, the gas superficial velocity variation of 0.26-7.8 m/s. The differential pressure transducer was used in this study to measure the pressure drop, which is occurs in square microchannels. Whereas,
The flow patterns were recorded by using the high-speed camera. Furthermore the flow pattern video was analyzed by using image processing method to obtain the flow pattern charcteristics. The twophase flow pressure drop of all gas-Newtonian/non-Newtonian liquids two-phase flows in this study increase by increasing JL in the same JG. The flow patterns that occur in this study are bubbly, slug, slug-annular and churn. The viscosity and rheological parameter of liquids test influenced the characteristic of flow patterns. The flow patterns in this study were plotted in the flow patterns map and suitable with the flow patterns transisiton lines based on the previous
study. Likewise, the experimental pressure drop shows the good agreement with the pressure drop prediction correlation by Kawahara et al. (2011)
