Numerical Investigation of Oil Gas Separation with the Use of VOF CFD
In this research paper, a numerical study regarding gas-oil separation is presented. Employing the geometry of a classic separator used by the NRDI for Gas Turbines COMOTI and a Computer-Aided Design (CAD) software, the computational domain was defined. To perform the Computational Fluid Dynamics (CFD) investigation, the mesh was created with the ANSYS Meshing tool, and the ANSYS CFX was employed as a solver. The computational domain was split into 5 subdomains, 3 were fluid and 2 were defined as porous media. The volume porosity, loss model, and permeability were set up. In terms of turbulence flow, the standard k–ε model was adopted. The results of the numerical calculations in terms of oil volume fraction and streamline profiles were used to analyze the separator configuration. The results show that the numerical investigation with the VOF (Volume of Fluid Method) - CFD model is capable of analyzing the performance of a two-phase separator equipped with two demisters-porous media.
Keywords:two-phase separator, computational fluid dynamics, volume of fluid, porous media, demister
C. Zou, Q. Zhao, G. Zhang, and B. Xiong, "Energy revolution: From a fossil energy era to a new energy era," Natural Gas Industry B, vol. 3, no. 1, pp. 1–11, Jan. 2016, https://doi.org/10.1016/j.ngib.2016.02.001.
T. Paulauskiene, "Petroleum Extraction Engineering," in Recent Insights in Petroleum Science and Engineering, M. Zoveidavianpoor, Ed. IntechOpen, 2018, https://doi.org/10.5772/intechopen.70360.
M. Nitulescu, C. Slujitoru, and V. Petrescu, "Case Study regarding the test of the new screw compressor with high delivery pressure - 45 bara - on the test bench (with air)," INCAS BULLETIN, vol. 4, no. 4, pp. 151–159, Dec. 2012, https://doi.org/10.13111/2066-8201.2012.4.4.14.
W. J. Milligan, D. I. Muir, and D. K. Harrison, "Oil level measurement in oil-injected screw compressor packages used in the petroleum, petrochemical, refrigeration and fuel gas markets," in 8th International Conference on Compressors and their Systems, London, UK, Jan. 2013, pp. 77–85, https://doi.org/10.1533/9781782421702.2.77.
S. F. A. Bukhari, I. Ismail, and W. Q. Yang, "Visualising oil separator vessel and decision-making for control," in 4th World Congress in Industrial Process Tomography, 2005, pp. 855–860.
S. Kaiser, A. Gugelfuß, A. Gyurkovich, M. Rupp, C. Mehring, and M. Piesche, "Characterization of oil injected screw compressors and air/oil separators at realistic operating pressures," Aerosol Science and Technology, vol. 53, no. 11, pp. 1311–1321, Nov. 2019, https://doi.org/10.1080/02786826.2019.1659937.
N. D. Katopodes, Free-Surface Flow: Computational Methods, Oxford, UK: Butterworth-Heinemann, 2019.
V. Dragan, I. Malael, and B. Gherman, "A Comparative Analysis Between Optimized and Baseline High Pressure Compressor Stages Using Tridimensional Computational Fluid Dynamics," Engineering, Technology & Applied Science Research, vol. 6, no. 4, pp. 1103–1108, Aug. 2016, https://doi.org/10.48084/etasr.696.
S. C. K. De Schepper, G. J. Heynderickx, and G. B. Marin, "CFD modeling of all gas–liquid and vapor–liquid flow regimes predicted by the Baker chart," Chemical Engineering Journal, vol. 138, no. 1, pp. 349–357, May 2008, https://doi.org/10.1016/j.cej.2007.06.007.
A. P. Laleh, W. Y. Svrcek, and W. D. Monnery, "Design and CFD studies of multiphase separators—a review," The Canadian Journal of Chemical Engineering, vol. 90, no. 6, pp. 1547–1561, 2012, https://doi.org/10.1002/cjce.20665.
G. Cheng, L. Y. Yan, and H. Zhou, "The Oil Vessel Structure Optimization by the use of CFD in the Oil Injection Twin-Screw Compressor," presented at the International Compressor Engineering Conference, West Lafayette, IN, USA, 2004, Art. no. 1714.
N. Kharoua, L. Khezzar, and H. Saadawi, "CFD Simulation of Three-Phase Separator: Effects of Size Distribution," presented at the ASME 2013 Fluids Engineering Division Summer Meeting, Incline Village, NV, USA, Jul. 2013, Art. no. FEDSM2013-16322, https://doi.org/10.1115/FEDSM2013-16322.
P. A. Vesilind, "The Rosin-Rammler particle size distribution," Resource Recovery and Conservation, vol. 5, no. 3, pp. 275–277, Sep. 1980, https://doi.org/10.1016/0304-3967(80)90007-4.
F. P. Lucas and R. Huebner, "Numerical Simulation of Single-Phase and Two-Phase Flows in Separator Vessels with Inclined Half-Pipe Inlet Device Applied in Reciprocating Compressors," Engineering, Technology & Applied Science Research, vol. 8, no. 3, pp. 2897–2900, Jun. 2018, https://doi.org/10.48084/etasr.1993.
L. A. Abdulkareem, "Identification of Oil-Gas Two Phase Flow in a Vertical Pipe using Advanced Measurement Techniques," Engineering, Technology & Applied Science Research, vol. 10, no. 5, pp. 6165–6171, Oct. 2020, https://doi.org/10.48084/etasr.3679.
A. Efendioglu, J. Mendez, and H. Turkoglu, "The numerical analysis of the flow and separation efficiency of a two-phase horizontal oil-gas separator with an inlet diverter and perforated plates," presented at the AFM2014, La Coruña, Spain, Jul. 2014, pp. 133–142, https://doi.org/10.2495/AFM140121.
L. Z. Wang, X. Gao, J. M. Feng, and X. Y. Peng, "Research on the two-phase flow and separation mechanism in the oil-gas cyclone separator," in 9th International Conference on Compressors and their Systems, London, UK, Sep. 2015, Art. no. 012075, https://doi.org/10.1088/1757-899X/90/1/012075.
V. Vijayan, M. Vivekanandan, R. Venkatesh, K. Rajaguru, and A. Godwin Antony, "CFD modeling and analysis of a two-phase vapor separator," Journal of Thermal Analysis and Calorimetry, vol. 145, no. 5, pp. 2719–2726, Sep. 2021, https://doi.org/10.1007/s10973-020-09825-2.
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