(Mechanical Engineering Study Program, Universitas Malikussaleh, Aceh Utara, 24351, Indonesia)
(2) Muhammad Sayuthi
(Mechanical Engineering Study Program, Universitas Malikussaleh, Aceh Utara, 24351, Indonesia)(3) M. Iqbal Adhya Putra
(Mechanical Engineering Study Program, Universitas Malikussaleh, Aceh Utara, 24351, Indonesia)(4) Muhammad Habibi
(Mechanical Engineering Study Program, Universitas Malikussaleh, Aceh Utara, 24351, Indonesia)(5) Aljufri Aljufri
(Mechanical Engineering Study Program, Universitas Malikussaleh, Aceh Utara, 24351, Indonesia)*Corresponding author
AbstractTwo-phase water–air flow in a horizontal pipe exhibits complex characteristics due to the interaction of superficial velocity, gravity, surface tension and interface dynamics. This study aims to analyse the wave characteristics and liquid hold-up during the slug–annular transition in co-current water–air flow. Experiments were conducted using a horizontal acrylic pipe with an internal diameter of 26 mm and a development length of 9.5 m. Flow patterns were observed using a high-speed camera at 400 frames per second, whilst liquid hold-up was measured using three Constant Electric Current Method (CECM) sensors spaced 215 mm apart. Signals were recorded at a sampling rate of 500 Hz for 20 s and analysed using statistical methods and Power Spectral Density (PSD). The results show that an increase in the superficial velocity of both the gas and liquid influences wave development and the formation of the liquid film towards an annular pattern. The wave velocity increases as the superficial velocity of both the gas and liquid rises. Under annular conditions, ripple waves and disturbance waves were identified, indicating fluctuations in the liquid film. The average liquid hold-up increased with increasing liquid superficial velocity at a constant gas velocity. The combination of visualisation and CECM is effective for characterising interface dynamics and liquid hold-up distribution during the slug–annular transition.
KeywordsTwo-Phase Flow; Slug–Annular Transition; Annular Flow; Liquid Hold-Up; CECM; PSD
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DOIhttps://doi.org/10.33122/ejeset.v7i1.1514 |
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References
Zdornikov, S. A., Isaenkov, S. V., & Cherdantsev, A. V. (2024). Axial and azimuthal development of disturbance waves in annular flow in a horizontal pipe. International Journal of Multiphase Flow, 172, 104704. https://doi.org/10.1016/j.ijmultiphaseflow.2023.104704.
Zdornikov, S. A., Isaenkov, S. V., & Cherdantsev, A. V. (2026). The effect of liquid properties on stratified-to-annular transition in a horizontal pipe. International Journal of Multiphase Flow, 195, 105552. https://doi.org/10.1016/j.ijmultiphaseflow.2025.105552.
Zhang, H., Umehara, Y., Yoshida, H., & Mori, S. (2023). On the velocity and frequency of disturbance waves in vertical annular flow with different surface tension and gas–liquid density ratio. International Journal of Heat and Mass Transfer, 211, 124253. https://doi.org/10.1016/j.ijheatmasstransfer.2023.124253.
Zhao, Z., Wang, B., Wang, J., Fang, L., Li, X., Wang, F., & Zhao, N. (2022). Liquid film characteristics measurement based on NIR in gas–liquid vertical annular upward flow. Measurement Science and Technology, 33, 065014. https://doi.org/10.1088/1361-6501/ac57ed.
Fershtman, A., Barnea, D., & Shemer, L. (2021). Wave identification in upward annular flow—A focus on ripple characterization. International Journal of Multiphase Flow, 137, 103560. https://doi.org/10.1016/j.ijmultiphaseflow.2021.103560.
Cherdantsev, M. V., Isaenkov, S. V., Cherdantsev, A. V., & Markovich, D. M. (2021). Development and interaction of disturbance waves in downward annular gas–liquid flow. International Journal of Multiphase Flow, 138, 103614. https://doi.org/10.1016/j.ijmultiphaseflow.2021.103614.
Sun, J., Guo, L., Fu, J., Jing, J., Yin, X., Lu, Y., Ullmann, A., & Brauner, N. (2022). A new model for viscous oil–water eccentric core annular flow in horizontal pipes. International Journal of Multiphase Flow, 147, 103892. https://doi.org/10.1016/j.ijmultiphaseflow.2021.103892.
Nie, F., Wang, H., Song, Q., Zhao, Y., Shen, J., & Gong, M. (2022). Image identification for two-phase flow patterns based on CNN algorithms. International Journal of Multiphase Flow, 152, 104067. https://doi.org/10.1016/j.ijmultiphaseflow.2022.104067.
Li, X., Li, L., Ma, W., & Wang, W. (2022). Two-phase flow patterns identification in porous media using feature extraction and SVM. International Journal of Multiphase Flow, 156, 104222. https://doi.org/10.1016/j.ijmultiphaseflow.2022.104222.
Pagano, A., & Angeli, D. (2022). Two-phase flow characterization through recurrence quantification analysis of the dominant features of experimental dynamics. International Journal of Multiphase Flow, 152, 104102. https://doi.org/10.1016/j.ijmultiphaseflow.2022.104102.
Amirsoleymani, A., Ting, D. S.-K., Carriveau, R., Brown, D., & McGillis, A. (2023). Two-phase flow pattern identification in CAES systems with dimensional analysis coupled with support vector machine. International Journal of Multiphase Flow, 160, 104343. https://doi.org/10.1016/j.ijmultiphaseflow.2022.104343.
Catrawedarma, I. G. N. B., Deendarlianto, & Indarto. (2021). Statistical characterization of flow structure of air–water two-phase flow in airlift pump–bubble generator system. International Journal of Multiphase Flow, 138, 103596. https://doi.org/10.1016/j.ijmultiphaseflow.2021.103596.
Zhang, H., Mori, S., Hisano, T., & Yoshida, H. (2023). Effect of gas density and surface tension on liquid film thickness in vertical upward disturbance wave flow. International Journal of Multiphase Flow, 159, 104342. https://doi.org/10.1016/j.ijmultiphaseflow.2022.104342.
Cherdantsev, A. V., Sinha, A., & Hann, D. B. (2022). Studying the impacts of droplets depositing from the gas core onto a gas-sheared liquid film with stereoscopic BBLIF technique. International Journal of Multiphase Flow, 150, 104033. https://doi.org/10.1016/j.ijmultiphaseflow.2022.104033.
Cherdantsev, A. V., Isaenkov, S. V., Cherdantsev, M. V., & Markovich, D. M. (2021). The effect of high-frequency oscillations on the disturbance waves in annular flow. International Journal of Multiphase Flow, 143, 103754. https://doi.org/10.1016/j.ijmultiphaseflow.2021.103754.
Sun, H., Li, T., Li, J., & Ding, H. (2024). Generalization of disturbance wave velocity of vertical annular flow considering entrained droplets effect. Experimental Thermal and Fluid Science, 151, 111102. https://doi.org/10.1016/j.expthermflusci.2023.111102.
Le Corre, J.-M. (2022). Phenomenological model of disturbance waves in annular two-phase flow. International Journal of Multiphase Flow, 151, 104057. https://doi.org/10.1016/j.ijmultiphaseflow.2022.104057.
Li, H., Pourquié, M. J. B. M., Ooms, G., & Henkes, R. A. W. M. (2022). Simulation of a turbulent annulus with interfacial waves in core-annular pipe flow. International Journal of Multiphase Flow, 104152. https://doi.org/10.1016/j.ijmultiphaseflow.2022.104152.
Li, H., Pourquié, M. J. B. M., Ooms, G., & Henkes, R. A. W. M. (2021). Simulation of turbulent horizontal oil–water core-annular flow with a low-Reynolds number k–ε model. International Journal of Multiphase Flow, 142, 103744. https://doi.org/10.1016/j.ijmultiphaseflow.2021.103744.
Zhao, N., Zhu, G., Feng, J., Luo, X., & Song, J. (2025). Experimental investigation on characteristics of flow-induced acoustics in horizontal gas–liquid two-phase flow. International Journal of Multiphase Flow, 192, 105378. https://doi.org/10.1016/j.ijmultiphaseflow.2025.105378.
Yang, J., Li, M., Lai, X., Wei, M., Shen, Y., & Du, Y. (2026). Identification of gas–liquid two-phase flow patterns in risers based on fiber optic distributed acoustic sensing and SVM. International Journal of Multiphase Flow, 198, 105588. https://doi.org/10.1016/j.ijmultiphaseflow.2025.105588.
Nagarajan, H. K., & Trujillo, M. F. (2024). Quantifying a common inconsistency in RANS-VoF modeling of water and oil core-annular flow. International Journal of Multiphase Flow, 105008. https://doi.org/10.1016/j.ijmultiphaseflow.2024.105008.
Sun, J., Zheng, Y., Jiang, L., Yang, C., Huang, C., Sun, N., Li, W., Ullmann, A., & Brauner, N. (2025). Investigation on flow characteristics of highly viscous oil–water core-annular flow in horizontal pipes based on machine learning. International Journal of Multiphase Flow, 189, 105265. https://doi.org/10.1016/j.ijmultiphaseflow.2025.105265.
Cai, B., Xia, G., Cheng, L., & Wang, Z. (2023). Experimental investigation on spatial phase distributions for various flow patterns and frictional pressure drop characteristics of gas–liquid two-phase flow in a horizontal helically coiled rectangular tube. Experimental Thermal and Fluid Science, 142, 110806. https://doi.org/10.1016/j.expthermflusci.2022.110806.
Cheng, L., & Xia, G. (2023). Flow patterns and flow pattern maps for adiabatic and diabatic gas–liquid two-phase flow in microchannels: Fundamentals, mechanisms and applications. Experimental Thermal and Fluid Science, 148, 110988. https://doi.org/10.1016/j.expthermflusci.2023.110988.
Cao, Y., Xu, Q., Yu, H., Huang, B., Liu, T., & Guo, L. (2023). Experimental investigation on interface characteristics of gas–liquid two-phase flow in a kilometer-scale pipeline. Experimental Thermal and Fluid Science, 149, 111017. https://doi.org/10.1016/j.expthermflusci.2023.111017.
Li, H., Pourquié, M. J. B. M., Ooms, G., & Henkes, R. A. W. M. (2023). Simulation of vertical core-annular flow with a turbulent annulus. International Journal of Multiphase Flow, 167, 104551. https://doi.org/10.1016/j.ijmultiphaseflow.2023.104551.
Liu, Y., Mitchell, T., Upchurch, E. R., Ozbayoglu, E. M., & Baldino, S. (2024). Investigation of Taylor bubble dynamics in annular conduits with counter-current flow. International Journal of Multiphase Flow, 104626. https://doi.org/10.1016/j.ijmultiphaseflow.2023.104626.
Meng, J., Liang, F., He, Z., Zhao, J., & Li, N. (2023). Experimental investigation for liquid film characteristics of gas–liquid swirling flow in a horizontal pipe. International Journal of Multiphase Flow, 104400. https://doi.org/10.1016/j.ijmultiphaseflow.2023.104400.
Cherdantsev, A. V. (2023). Three-dimensional evolution and interaction of disturbance waves on a gas-sheared liquid film on a horizontal plane near the transition region. International Journal of Multiphase Flow, 104468. https://doi.org/10.1016/j.ijmultiphaseflow.2023.104468.
Fershtman, A., Barnea, D., & Shemer, L. (2023). Interfacial structure of gas–liquid annular and stratified flows in downward inclined pipes. International Journal of Multiphase Flow, 104621. https://doi.org/10.1016/j.ijmultiphaseflow.2023.104621.
Aliyu, A. M., Choudhury, R., Sohani, B., Atanbori, J., Ribeiro, J. X. F., Brini Ahmed, S. K., & Mishra, R. (2023). An artificial neural network model for the prediction of entrained droplet fraction in annular gas–liquid two-phase flow in vertical pipes. International Journal of Multiphase Flow, 104452. https://doi.org/10.1016/j.ijmultiphaseflow.2023.104452.
Mondal, A., & Sharma, S. L. (2024). Prediction of entrainment fraction in two-phase gas–liquid co-current annular flow—A machine learning approach. International Journal of Heat and Mass Transfer, 125499. https://doi.org/10.1016/j.ijheatmasstransfer.2024.125499.
Gómez-Camperos, J. A., Ruiz Diaz, C. M., Hernandez Cely, M. M., Hernandez Rodriguez, O. M., & Pardo Garcia, A. (2026). Dense-gas/liquid two-phase flow pattern recognition using convolutional neural networks and transfer learning. International Journal of Multiphase Flow, 194, 105479. https://doi.org/10.1016/j.ijmultiphaseflow.2025.105479.
Cioncolini, A. (2026). Predicting mean size and velocity of entrained drops in gas–liquid annular two-phase flow. International Journal of Multiphase Flow, 201, 105756. https://doi.org/10.1016/j.ijmultiphaseflow.2026.105756.
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Copyright (c) 2026 Suryadi Suryadi, Muhammad Sayuthi, M. Iqbal Adhya Putra, Muhammad Habibi, Aljufri Aljufri
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