Commenced in January 2007
Paper Count: 30172
Computational Fluid Dynamics Modeling of Downward Bubbly Flows
Abstract:Downward turbulent bubbly flows in pipes were modeled using computational fluid dynamics tools. The Hydrodynamics, phase distribution and turbulent structure of twophase air-water flow in a 57.15 mm diameter and 3.06 m length vertical pipe was modeled by using the 3-D Eulerian-Eulerian multiphase flow approach. Void fraction, liquid velocity and turbulent fluctuations profiles were calculated and compared against experimental data. CFD results are in good agreement with experimental data.
Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1079714Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 1994
 H. Karimi, M. R. Rahimi, "A Robust Classification method for the Prediction of Two Phase Flow Pattern, using Ensemble Classifiers Technique," in proc. 11th Int. Conf. on Multiphase Flow in Industrial Plants, Palermo, 2008, pp. 443-451.
 H. Hulburt, S.Katz, "Some Problems in Particle Technology: a Statistical Mechanical Formulation," Chem. Eng. Sci, vol. 19, 555, 1964.
 G. Kocamustafaogullari, M. Ishii, "Foundation of the interfacial area transport equation and its closure relations," Int. J. Heat Mass Trans, vol. 38 (3), pp. 481-493, 1995.
 T. Wang, J. Wang, and Y. Jin, "Population Balance Model for Gas−Liquid Flows: Influence of Bubble Coalescence and Breakup Models," Ind. Eng. Chem. Res., vol. 44, 19, 2005.
 T. Hibiki, M. Ishii, Z. Xiao, "Axial interfacial area transport of vertical bubble flows," Int. J. Heat Mass Trans, vol. 44, pp 1869-1888, 2001.
 T. Hibiki, M. Ishii, "Development of one-group interfacial area transport equation in bubbly flow systems," Int. J. Heat Mass Trans., vol. 45, pp. 2351-2372, 2002.
 K. Ekambara, R.S. Sanders, K. Nandakumar, J.H. Masliyah, "CFD simulation of bubbly two-phase flow in horizontal pipes," Chem. Eng. J., vol. 144, pp. 277-288, 2008.
 C.P. Cheung, G.H. Yeoh,, J.Y. Tu, "On the modeling of population balance in isothermal vertical bubbly flows - Average bubble number density approach," Chem. Eng. Process., vol. 46, pp. 742-756, 2007.
 S. Sar─▒, S. Erg├╝n, M. Bar─▒k, C. Kocar, C. N. Sökmen, "Modeling of isothermal bubbly flow with ─▒nterfacial area transport equation and bubble number density approach," Annals of Nuclear Energy , vol. 36, pp. 222-232, 2009.
 S. K. Wang, S. J. Lee, O. C. Jones and R. T. Lahey, "3-D turbulece structure and phase distribution measurements in bubbly two-phase flows," Int. J. Multiphase flow, Vol. 13, pp. 327-343, 1987.
 Y. Sato, M. Sadatomi, K. Sekoguchi, "Momentum and heat transfer in two-phase bubbly flowÔÇöI," International Journal of Multiphase Flow, vol. 7, pp. 167-178, 1981.
 A. Serizawa, I. Kataoka, "Phase distribution in two-phase flow. In: Afgan, N.H. (Ed.), Transient Phenomena in Multiphase Flow. Washington, DC, pp. 179-224, 1988.
 H. Luo, H. Svendsen, "Theoretical model for drop and bubble break-up in turbulent dispersions, AIChE J., vol. 42, pp. 1225-1233, 1996.
 M.J. Prince, H.W. Blanch, "Bubble coalescence and break-up in air sparged bubble columns," AIChE J., vol. 36, pp. 1485-1499, 1990.
 A.K. Chesters, G. Hoffman, "Bubble coalescence in pure liquids," Appl. Sci. Res, vol. 38, pp. 353-361, 1982.
 J.C. Rotta, Turbulente Stromungen, Stuttgart, 1974.
 H. Anglart, O. Nylund, "CFD application to prediction of void distribution in two-phase bubbly flows in rod bundles," Nucl. Sci. Eng., vol. 163, pp. 81-98, 1996.
 R.T. Lahey Jr., D.A. Drew, "The analysis of two-phase flow and heat transfer using multidimensional, four field, two-fluid model," Nucl. Eng. Des., vol. 204,pp. 29-44, 2001.
 J.B. Joshi, "Computational flow modeling and design of bubble column reactors," Chem. Eng. Sci., vol. 55, pp. 5893-5933, 2001.
 M. Ishii, N. Zuber, "Drag coefficient and relative velocity in bubbly, droplet or particulate flows," AIChE J., vol. 25, pp. 843-855, 1979.
 I. Zun, "The transverse migration of bubbles influenced by walls in vertical bubbly flow," Int. J. Multiphase Flow, vol. 6, pp. 583-588, 1980.
 N.H. Thomas, T.R. Auton, K. Sene, J.C.R. Hunt, "Entrapment and transport of bubbles by transient large eddies in turbulent shear flow, in proc. BHRA International Conference on the Physical Modelling of Multiphase Flow, 1983.
 D.A. Drew, S.L. Passman, Theory of Multicomponent Fluids, Springer- Verlag, New York, 1999.
 A. Tomiyama, H. Tamai, I. Zun, S. Hosokawa, "Transverse migration of single bubbles in simple shear flows," Chem. Eng. Sci., vol. 57, pp. 1849-1858, 2002.
 M.A. Lopez de Bertodano, "Turbulent bubbly two-phase flowin a triangular duct, Ph.D. dissertation, Rensselaer Polytechnic Institute, 1992.
 S.P. Antal, R.T. Lahey, J.E. Flaherty, "Analysis of phase distribution in fully developed laminar bubbly two phase flow," Int. J. Multiphase Flow, vol. 7, 635, 1991.