Isothermal and non-isothermal water and oil two-phase flow (core-flow) in curved pipes

T Andrade, K Crivelaro, S Neto, A Lima


The occurrence of heavy oils in the world has increased substantially and points favorable to investment in exploration of mineral deposits and consequently, for the development of new technologies. Heavy oil has a high viscosity that varies from 100 to 10,000 times greater than the viscosity of water. The high pressure due to friction and viscous effects during the transport of heavy oil has been a major challenge, for itself to be economically viable for production or transportation. The core annular flow technique is a more recent technology favorable the explotation and transportation of heavy oils that provides a considerable reduction of pressure drop during the flow of these oils type. In this sense, this paper presents a 3D numerical study involving the heavy oil transportation in curved pipes, using the core-flow technique by CFD (ANSYS CFX® 12.0). Results of pressure, velocity, volume fraction and temperature distribution of the heavy oil are presented and analysed.

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Andrade, T. H. F., Crivelaro, K. C. O., Farias Neto, Severino R., Lima, A. G. B. Numerical study of heavy oil flow on horizontal pipe lubricated by water, In: Andreas Ochsner; Lucas F. M. da Silva; Holm Altenbach. (Org.). Materials with Complex Behaviour II: Properties, Non-Classical Materials and New Technologies. Series: Advanced Structured Materials. Heidelberg (Germany): Springer-Verlag, v. 16, p. 99-118, 2012.

ANSYS, CFX-Theory Manual, 2009.

Bai, R., Traveling waves in a high viscosity ratio and axisymmetric core annular flow. These (Doctorate), Faculty of Graduate School of the University of Minnesota, Minnesota-USA, 1995.

Bai, R.; Chen, K., Joseph, D. D. Lubricated pipelining: stability of core-annular flow. Part. 5. Experiments and comparison with theory, Journal of Fluid Mechanical, 1991, (240), p. 97-142.

Balakhrisna, T., Ghosh, Das, S., Das, G. P. K., Oil-water flows through sudden contraction and expansion in a horizontal pipe - Phase distribution and pressure drop, International Journal of Multiphase Flow, 2010, vol. 36, p. 13-24. CrossRef

Bannwart, A. C., Modeling Aspects of oil-water core-annular flows, Journal of Petroleum Science and Engineering, 2001, vol. 32, (2-4), p. 127-143. CrossRef

Bannwart, A. C.,Pressure drop in horizontal core-annular flow. Third International Conference on Multiphase Flow (ICMF), Lyon, France, June 8-12, 1998.

Bensakhria, A., Peysson, Y., Antonini, G., Experimental study of the pipeline lubrication for heavy oil transport, Oil & Gas Science and Technology, 2004- Rev. IFP, vol. 59, (5), p. 523-533. CrossRef

Brauner, N., Two-phase liquid-liquid annular flow, International Journal of Multiphase Flow, 1991, vol. 17, (1) 59-76. CrossRef

Crivelaro K. C. O., Damacena, Y. T., Andrade, T. H. F., Lima, A. G. B. & Farias Neto, S. R., Numerical simulation of heavy oil flows in pipes using the core-annular flow technique. WIT Transaction on Engineering Sciences, 2009, vol. 63, p. 193-204.

d'Olce M., Martin J., Rakotomalala N., Salin D., Talond, Pearl and mushroom instability patterns in two miscible fluids' core annular flows, Physics of Fluids, 2008, (20), N° 024104.

Fox R. W.; McDonald, A. T.; Pritchard, P. J., Introduction to fluid mechanics. 7° ed. John Wiley & Sons, 2008.

Huang. A., Christodoulou, C., Joseph, D. D., Friction fractor and holdup studies for lubricated pipelining-II, laminar and κ-ε models of eccentric core-flow, International Journal of Multiphase Flow, 1994, vol. 20, (3), p. 481-491. CrossRef

Joseph, D. D. and Renardy, Y. Y., Fundamentals of Two-Fluids Dynamics. Part II: Lubricated transport, drops and miscible liquids, 1993, Ed. New York Springer-Verlag.

Ko, T., Choi, H. G., Bai, R., Joseph, D. D., Finite element method simulation of turbulent wavy core-annular flows Using a k-ω Turbulence Model Method. International Journal of Multiphase Flow, 2002, vol. 28, (7), p. 1205-1222. CrossRef

Marinho, J. L. G., Study of multiphase flow in kind of bubble of Taylor curved connections. Dissertation (Masters in Chemical Engineering), Federal University of Campina Grande, 2008, p. 115. (in Portuguese)

Miesen, R., Beijnon, G., Duijvestijn, P. E. M., Oliemans, R. V. A., Verheggen, T.,Interfacial waves in core-annular flow. Journal of Fluid Mechanics, 1993, vol. 238, p. 97-117. CrossRef

Muniz, A. R.; Argimiro, R. S; Nilo, S. M. C.,A New Method for the simulation of viscoelastic fluid flows, 2005. Technical Report, Department of Chemical Engineering, Federal University of Rio Grande do Sul. (in Portuguese).

Oliemans, R. V. A., Ooms, G., Wu, H. L., Duijvestijn. A., The core-annular oil/water flow turbulent-lubricating-film model and measurements in a 5 cm Pipe Loop. International Jounal Multiphase Flow, 1987, vol. 13, (1), p. 23-31.

Ooms, G., Poesio, P., Stationary core-annular flow through a horizontal pipe. Physical Review, 2003, vol. 68.

Ooms, G.; Vuik, C.; Poesio, P., Core-annular flow through a horizontal pipe: hydrodynamic counterbalancing of buoyancy force on core. Physics of Fluids, 2007, vol. 19, N° 092103.

Prada, J., W., V.; Bannwart, A., C., Modeling of vertical core annular flows and application to heavy oil production. Energy for the New Millenium, p. 14-17, New Orleans, 2000, LA. Proceedings of ETCE/OMAE.

Racine, R. A. S.; Numerical analysis of behavior of the bubble of taylor in Tand Y junctions. Dissertation (Masters in Chemical Engineering). Federal University of Campina Grande, 2008, p. 128. (in Portuguese).

Rodriguez, O. M. H., Bannwart, A. C., Experimental study on interfacial waves in vertical core-flow. Journal of Petroleum Science and Engineering, 2006, vol. 54, (3-4), p. 140-148. CrossRef


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