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NUMERICAL SIMULATION OF OIL DISPERSION AFTER AN ACCIDENTAL SUBSEA BLOWOUT IN THE GULF OF PATRAS

Authors:

Dimitrios-Periklis A. Giannoulis1

, Nikolaos A. Avgerinos1, Dionissios P. Margaris1

1University of Patras, Mechanical Engineering and Aeronautics Department, Fluid Mechanics Laboratory, Patras, Greece

Received: 13.12.2020.
Accepted: 17.03.2021.
Available: 31.03.2021.

Abstract:

In recent years, there has been a growing interest in the exploitation of hydrocarbon deposits within the Greek territory, in the Aegean and the Ionian Sea. This increasing interest comes along with the possibility of an oil spill event of devastating impact on the environment, the marine life and the economic activity of the nearby coastal areas. In this context, the present work simulates the trajectory of leaking oil in the event of an accidental subsea blowout in the Gulf of Patras, in order to predict the underwater dispersion, to estimate the rise time needed for the underwater oil spill to reach the sea surface as well as the distance of this position from the accident location. Numerical simulations were performed using ANSYS Fluent software and the proposed numerical methods were validated against small-scale experimental results. Two cases involving oil leakage in the presence of transverse sea currents are examined, one for crude oil and one for chemically dispersed oil. Results for the rise times, the rise and horizontal migration velocities of the oil plume, as well as the distances traveled horizontally and vertically are presented.

Keywords

ANSYS Fluent, dispersants, leaking oil, numerical simulation, subsea blowout

References:

[1] H. Zhu, P. Lin, Q. Pan, A CFD (Computational Fluid Dynamic) for Oil Leakage from Damaged Submarine Pipeline. Energy, 64, 2014: 887-899.  https://doi.org/10.1016/j.energy.2013.10.037
[2] M. C. Boufadel, F. Gao, L. Zhao, T. Özgömen, R. Miller, T. King, B. Robinson, K. Lee, I. Leifer, Was the Deepwater Horizon Well Discharge Churn Flow? Implications on the Estimation of the Oil Discharge and Droplet Size Distribution. Geophysical Research Letters, 45, 2018: 2396-2403. https://doi.org/10.1002/ 2017GL076606
[3] M. Bakli, Evaluation of Oil and Gas Dispersion during Subsea Blowouts (Master Thesis). Norwegian University of Science and Technology, Trondheim, 2014.
[4] X. Li, G. Chen, H. Zhu, Modelling and Assessment of Accidental Oil Release from Damaged Subsea Pipelines. Marine Pollution Bulletin, 123 (1-2), 2017: 133-141. https://doi.org/10.1016/j.marpolbul.2017.09.004
[5] F. Gao, L. Zhao, M. C. Boufadel, T. King, B. Robinson, R. Conmy, R. Miller, Hydrodynamics of Oil Jets without and with Dispersant: Experimental and Numerical Characterization. Applied Ocean Research, 68, 2017:77-90.
https://doi.org/10.1016/j.apor.2017.08.013
[6] P.E. Makatounis, J. Skancke, E. Florou, A. Stamou, P.J. Brandvik, Management of Oil Spill Contamination in the Gulf of Patras Caused by an Accidental Subsea Blowout. Environmental Pollution, 231, 2017: 578-588.
https://doi.org/10.1016/j.envpol.2017.08.076
[7] D.P. Giannoulis, D.P. Margaris, Numerical Simulation of the Three Phase Flow Formed During the Containment of an Oil-Methane Leak Using the DIFIS System. International Review of Mechanical Engineering, 9 (6), 2015: 576-582.
https://doi.org/10.15866/ireme.v9i6.7714
[8] E. Papathanassiou, K. Pagou, E. Krasakopoulou, S. Reizopoulou, A. Pancucci, Strategic Environmental Assessment of the Hydrocarbon Activities for Prospecting, Research and Exploitation within the Licence Area “Western Patraikos Gulf”. Hellenic Centre for Marine Research, Attiki, 2012.
[9] Hellenic Hydrocarbon Resources Management, Patraikos Gulf (west) Block, detailed map.
https://www.greekhydrocarbons.gr/en/Patrai kosGulf_west_en.html (Accessed 28.10.2020).
[10] Computational Fluid Dynamics (CFD) PreProcessor, Gambit 2.2.30, 2007.
[11] ANSYS® Academic Research, Release 16.0, available: https://www.ansys.com.
[12] P.J. Brandvik, Ø. Johansen, U. Farooq, G. Angell, F. Leirvik, Subsurface Oil Releases – Experimental Study of Droplet Distributions and Different Dispersant Injection Techniques – Version 2, Final report. SINTEF Materials and Chemistry, Trondheim, 2014.
[13] N. Avgerinos, D.P. Margaris, A threedimensional CFD study of the hydrodynamic behavior of equal and unequal-sized in-line methane bubbles at high pressure. Chinese Journal of Chemical Engineering, 26 (9), 2018: 1792-1802. https://doi.org/10.1016/j.cjche.2017.12.009
[14] T. Engebretsen, T. Northug, K. Sjøen, T.K. Fanneløp, Surface Flow and Gas Dispersion from a Subsea Release of Natural Gas. The Seventh International Offshore and Polar Engineering Conference, 25th May, 1997, Honolulu, Hawaii, USA.
[15] Q. Pan, Modelling of Turbulent Flows with Strong Dispersed Phase-Continuous Fluid Interactions. Norwegian University of Science and Technology, Trondheim, 2014.

This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License (CC BY-NC 4.0)

Volume 9
Number 3
September 2024

Last Edition

Volume 9
Number 3
September 2024

How to Cite

D.-P.A. Giannoulis, , N.A. Avgerinos, D.P. Margaris, Numerical Simulation of Oil Dispersion After an Accidental Subsea Blowout in the Gulf of Patras. Applied Engineering Letters, 6(1), 2021: 11–20.
https://doi.org/10.18485/aeletters.2021.6.1.2

More Citation Formats

Giannoulis, D.-P. A., Avgerinos, N. A., & Margaris, D. P. (2021). Numerical Simulation of Oil Dispersion After an Accidental Subsea Blowout in the Gulf of Patras. Applied Engineering Letters6(1), 11–20.
https://doi.org/10.18485/aeletters.2021.6.1.2

Giannoulis, Dimitrios-Periklis A., et al. “Numerical Simulation of Oil Dispersion after an Accidental Subsea Blowout in the Gulf of Patras.” Applied Engineering Letters, vol. 6, no. 1, 2021, pp. 11–20, https://doi.org/10.18485/aeletters.2021.6.1.2.

Giannoulis, Dimitrios-Periklis A., Nikolaos A. Avgerinos, and Dionissios P. Margaris. 2021. “Numerical Simulation of Oil Dispersion after an Accidental Subsea Blowout in the Gulf of Patras.” Applied Engineering Letters 6 (1): 11–20.
https://doi.org/10.18485/aeletters.2021.6.1.2.

Giannoulis, D.-P.A., Avgerinos, N.A. and Margaris, D.P. (2021). Numerical Simulation of Oil Dispersion After an Accidental Subsea Blowout in the Gulf of Patras. Applied Engineering Letters, 6(1), pp.11–20.
doi: 10.18485/aeletters.2021.6.1.2.

NUMERICAL SIMULATION OF OIL DISPERSION AFTER AN ACCIDENTAL SUBSEA BLOWOUT IN THE GULF OF PATRAS

Authors:

Dimitrios-Periklis A. Giannoulis1

, Nikolaos A. Avgerinos1, Dionissios P. Margaris1

1University of Patras, Mechanical Engineering and Aeronautics Department, Fluid Mechanics Laboratory, Patras, Greece

Received: 13.12.2020.
Accepted: 17.03.2021.
Available: 31.03.2021.

Abstract:

In recent years, there has been a growing interest in the exploitation of hydrocarbon deposits within the Greek territory, in the Aegean and the Ionian Sea. This increasing interest comes along with the possibility of an oil spill event of devastating impact on the environment, the marine life and the economic activity of the nearby coastal areas. In this context, the present work simulates the trajectory of leaking oil in the event of an accidental subsea blowout in the Gulf of Patras, in order to predict the underwater dispersion, to estimate the rise time needed for the underwater oil spill to reach the sea surface as well as the distance of this position from the accident location. Numerical simulations were performed using ANSYS Fluent software and the proposed numerical methods were validated against small-scale experimental results. Two cases involving oil leakage in the presence of transverse sea currents are examined, one for crude oil and one for chemically dispersed oil. Results for the rise times, the rise and horizontal migration velocities of the oil plume, as well as the distances traveled horizontally and vertically are presented.

Keywords

ANSYS Fluent, dispersants, leaking oil, numerical simulation, subsea blowout

This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License (CC BY-NC 4.0)

Volume 9
Number 3
September 2024

Last Edition

Volume 9
Number 3
September 2024