Analisis pengaruh diameter pipa terhadap perubahan sub-regime pola aliran 2 fasa stratified air-udara pada pipa horizontal

A. Rahmandhika, H. Hendaryati, A. Mokhtar


Stratified water-air flow is very common and expected to occur in piping systems. Understanding the characteristics of liquid hold-up in stratified flow patterns is considered one of the important factors in operational financing for gas and liquid transportation in various industries. This study aims to determine the pipe diameter effect on the parameters of stratified flow pattern sub-regime. The data obtained in this study is used as a supporting database as a basis for developing the piping system design. The research was conducted on acrylic pipes with diameters of 16 and 26 mm and a length of 9.5 m. The method applied to determine the characteristics of the stratified flow pattern is the constant current (CECM). The observation area is located 220 – 260 D from the inlet. The value range of JL = 0.03 – 0.1 m/s and JG = 2.83 – 10 m/s. Based on the experiment, the results obtained from the liquid hold-up affect the criteria for sub-regime changes in stratified flow patterns. The liquid hold-up is affected by the superficial velocity of the liquid, gas, and inner pipe diameter. The higher the liquid's superficial velocity, the greater the liquid hold-up value. The higher the gas superficial velocity, the smaller the liquid hold-up value. At low JL, an increase in JG causes a sub-regime transition of the flow pattern from smooth stratified to wavy stratified. At high JL, an increase in JG causes a transition of the flow pattern sub-regime from pseudo slug to roll wave and wavy stratified.


Stratified flow Liquid hold-up Superficial velocity CECM

Full Text:



Abdalellah, O., Osman, A.B., Investigations on the slug two-phase flow in horizontal pipes: Past, presents, and future directives, Journal of Chemical Engineering Science, 238, 2021.

Al-Dogail, A.S., Gajbhiye, R.N., Effects of density, viscosity and surface tension on flow regimes and pressure drop of two-phase flow in horizontal pipes, Journal of Petroleum Science and Engineering, 205, 2021.

Arabi, A., Salhi, Y., On gas-liquid intermittent flow in a horizontal pipe: Influence of sub-regime on slug frequency, Journal of Chemical Engineering Science, 211, 2020.

Arabi, A., Zenati, Y., Experimental investigation of sudden expansion's influence on the hydrodynamic behavior of different sub-regimes of intermittent flow, Journal of Petroleum Science and Engineering, 205, 2021.

Bonzanini, A., Picchi, D., Velocity profiles description and shape factors inclusion in a hyperbolic, one-dimensional, transient two-fluid model for stratified and slug flow simulations in pipes, Journal of Petroleum, 5(2), 191-198, 2019.

Cao, X., Zhang, P., Li, X., Li, Z., Zhang, Q., Bian, J., Experimental and numerical study on the flow characteristics of slug flow in a horizontal elbow, Journal of Pipeline Science and Engineering, 2(4), 2022.

Deendarlianto, Rahmandhika, A., Widyatama, A., Dinaryanto, O., Widyaparaga, A., & Indarto, Experimental study on the hydrodynamic behavior of gas-liquid air-water two-phase flow near the transition to slug flow in horizontal pipes, International Journal of Heat and Mass Transfer, 130, 187-203, 2019.

Gonçalves, G. F. N., Matar, O.K., Mechanistic modelling of two-phase slug flows with deposition, Journal of Chemical Engineering Science, 259, 2022.

Hudaya, A.Z., Widyatama, A., Dinaryanto, O., Juwana, W.E., Indarto, Deendarlianto, The liquid wave characteristics during the transportation of air-water stratified co-current two-phase flow in a horizontal pipe, Experimental Thermal and Fluid Science Journal, 103, 304-317, 2019.

Mandhane, J.M., A flow pattern map for gas--liquid flow in horizontal pipes, International Journal of Multiphase Flow, 1, 537-553, 1974.

Rahmandhika, A., Dinaryanto, O., Widyatama, A., Hudaya, A. Z., Indarto, Deendarlianto, Visualization study in the transition flow pattern of stratified to slug flow of air-water two phase flow in a horizontal pipe. Paper presented at the AIP Conference Proceeding of the 9th International Conference on Thermofluids, Yogyakarta, 2018.

Rahmandhika, A., Mokhtar, A., Pengaruh liquid hold-up terhadap transisi pola aliran 2 fasa air-udara dari stratified ke slug pada pipa 50 mm, Journal of Science and Applicative Technology, 4(2), 2020.

Rahmandhika, A., Suprianto, H, Characterization of slug flow pattern formation in 16 mm diameter horizontal pipe. Paper presented at the AIP Conference Proceeding of 1st International Conference on Technology, Informatics, and Engineering, Malang, 2022.

Seo, K., Kim, I., Park, K.-J., Jung, M., Yoon, H., Kim, S., Corradini, M., An analysis of air-water flow phenomena due to a pipe break under sub-atmospheric pressures using TRACE, Journal of Nuclear Engineering and Design, 374, 2021.



  • There are currently no refbacks.

Copyright (c) 2024

Creative Commons License
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

After being re-accredited, the Journal of Dinamika Teknik Mesin, still has sinta 3 (S3) which is valid until 2025.
View My Stats