Low Pressure Experimental Validation of Low-Dimensional Analytical Model for Air–Water Two-Phase Transient Flow in Horizontal Pipelines
Abstract
:1. Introduction
2. Reduced-Order Dynamic Transient Multiphase Flow Model
2.1. Low-Dimensional Transient Multiphase Flow Model
2.2. OLGA Multiphase Flow Model
2.3. Steady-State Multiphase Flow Models Comparison
3. Dynamic Multiphase Flow Model Evaluation
3.1. National University of Singapore (NUS) Experimental Facility, Instrumentation and Data Acquisition
3.2. Dynamic Multiphase Flow Transient Response Evaluation
3.2.1. Effect of the Number of Modes on the Low-D Model Accuracy
3.2.2. Effect of Entrained Air on the Pipeline Dynamic Response
3.2.3. Effect of Gas Volume Fraction (GVF) on the Pipeline Dynamic Response
4. Discussion
5. Conclusions
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Conflicts of Interest
References
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Flow Regime | Pressure Drop Gradient | Liquid Holdup | ||||
---|---|---|---|---|---|---|
Beggs and Brill | Petalas and Aziz | OLGA | Beggs and Brill | Petalas and Aziz | OLGA | |
Bubble | 0.775 | 0.856 | 0 | 0.870 | 0.932 | 0.887 |
Plug | 0.699 | 0.718 | 0 | 0.823 | 0.898 | 0.825 |
Stratified | 0.656 | 0.920 | 0 | 0.766 | 0.847 | 0.781 |
Froth | 0.766 | 0.899 | 0.323 | 0.560 | 0.947 | 0.857 |
Slug | 0.610 | 0.857 | 0 | 0.793 | 0.921 | 0.892 |
Annular Mist | 0.774 | 0.904 | 0.002 | 0.701 | 0.897 | 0.841 |
Dispersed Bubble | 0.935 | 0.861 | 0.512 | 0.890 | 0.922 | 0.812 |
Case Number | Initial Liquid Superficial Velocity (m/s) | Steady-State Liquid Superficial Velocity (m/s) |
---|---|---|
1 | 0.1 | 2 |
2 | 0.1 | 3 |
3 | 0.1 | 4 |
Case Number | GVF | Equivalent Bulk Modulus (Pa) | Equivalent Density (kg/m3) |
---|---|---|---|
1 | 0.015 | 7.12 106 | 983.55 |
2 | 0.016 | 6.85 106 | 982.94 |
3 | 0.014 | 7.57 106 | 984.48 |
GVF (%) | MAPE (%) | |
---|---|---|
Low-D Model | OLGA | |
10 | 1.96 | 2.82 |
20 | 3.43 | 4.25 |
30 | 2.91 | 3.41 |
40 | 2.60 | 3.01 |
50 | 3.32 | 3.82 |
60 | 2.12 | 1.60 |
70 | 1.87 | 1.91 |
80 | 1.72 | 1.79 |
90 | 1.63 | 1.65 |
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Mnasri, H.; Meziou, A.; Franchek, M.A.; Loh, W.L.; Wan, T.T.; Tam, N.D.; Wassar, T.; Tang, Y.; Grigoriadis, K. Low Pressure Experimental Validation of Low-Dimensional Analytical Model for Air–Water Two-Phase Transient Flow in Horizontal Pipelines. Fluids 2021, 6, 220. https://doi.org/10.3390/fluids6060220
Mnasri H, Meziou A, Franchek MA, Loh WL, Wan TT, Tam ND, Wassar T, Tang Y, Grigoriadis K. Low Pressure Experimental Validation of Low-Dimensional Analytical Model for Air–Water Two-Phase Transient Flow in Horizontal Pipelines. Fluids. 2021; 6(6):220. https://doi.org/10.3390/fluids6060220
Chicago/Turabian StyleMnasri, Hamdi, Amine Meziou, Matthew A. Franchek, Wai Lam Loh, Thiam Teik Wan, Nguyen Dinh Tam, Taoufik Wassar, Yingjie Tang, and Karolos Grigoriadis. 2021. "Low Pressure Experimental Validation of Low-Dimensional Analytical Model for Air–Water Two-Phase Transient Flow in Horizontal Pipelines" Fluids 6, no. 6: 220. https://doi.org/10.3390/fluids6060220