Document Type : Research Paper
Authors
1 Department of Mechanical Engineering, Tarbiat Modares University, Tehran, Iran.
2 Department of Mechanical Engineering, University of Tehran, Tehran, Iran
Abstract
Hydrodynamics of multiple rising bubbles as a fundamental two-phase phenomenon is studied numerically by lattice Boltzmann method and using Lee two-phase model. Lee model based on Cahn-Hilliard diffuse interface approach uses potential form of intermolecular forces and isotropic finite difference discretization. This approach is able to avoid parasitic currents and leads to a stable procedure to simulate two-phase flows. Deformation and coalescence of bubbles depend on a balance between surface tension forces, gravity forces, inertia forces and viscous forces. A simulation code is developed and validated by analysis of some basic problems such as bubble relaxation, merging bubbles, merging droplets and single rising bubble. Also, the results of two rising bubbles as the simplest interaction problem of rising bubbles have been calculated and presented. As the main results, square and lozenge initial configuration of nine rising bubbles are studied at Eotvos numbers of 2, 10 and 50. Two-phase flow behavior of multiple rising bubbles at same configurations is discussed and the effect of Eotvos number is also presented. Finally, velocity field of nine rising bubbles is presented and discussed with details.
Keywords
Main Subjects
10. Dadvand A., 2016, Simulation of the motion of two elastic membranes in Poiseuille shear flow via a combined immersed boundary-lattice Boltzmann method. Journal of Computational Science 12: 51-61.
11. Dadvand A., 2018, Effects of deformability of RBCs on their dynamics and blood flow passing through a stenosed microvessel: an immersed boundary-lattice Boltzmann approach, Theoretical and Computational Fluid Dynamics, 32(1): 91-107.
12. Gunstensen K., Rothman D.H., Zaleski S., Zanetti G., 1991, Lattice Boltzmann model of immiscible fluids, Physical Review A 43(8): p. 4320.
13. Grunau D., Chen S., Eggert K., 1993, A lattice Boltzmann model for multiphase fluid flows, Phys. Fluids A 5(10): p. 2557.
14. Shan X., Chen H., 1993, Lattice Boltzmann model for simulating flows with multiple phases and components, Phys. Rev. E 47(3): p. 1815.
15. Shan X., Chen H., 1994, Simulation of non-ideal gases and liquid–gas phase transitions by the lattice Boltzmann equation, Phys. Rev. E 49: p. 2941.
16. Shan X., Doolen G.D., 1995, Multicomponent lattice-Boltzmann model with interparticle interaction, J. Stat. Phys. 81: 379-393.
17. Shan X., Doolen G., 1996, Diffusion in a multicomponent lattice Boltzmann equation model, Phys. Rev. E 54(4): p. 3614.
18. Swift M.R., Osborn W.R., Yeomans J.M., 1995, Lattice Boltzmann simulation of nonideal fluids, Phys. Rev. Lett. 75(5): p. 830.
19. Swift M.R., Orlandini E., Osborn W.R., Yeomans J.M., 1996, Lattice Boltzmann simulation of liquid–gas and binary-fluid system, Phys. Rev. E 54(5): p. 5041.
20. Orlandini E., Swift M.R., Yeomans J.R., 1995, A Lattice Boltzmann Model of Binary-Fluid Mixtures, Europhys. Lett. 32 (6): 463-468.
21. He X., Shan X., Doolen G.D., 1998, A discrete Boltzmann equation model for non-ideal gases, Phys. Rev. E 57(1): p. R13.
22. He X., Chen S., 1999, Zhang R., A lattice Boltzmann scheme for incompressible multiphase flow and its application in simulation of Rayleigh–Taylor instability, J. Comput. Phys. 152(2): 642–663.
23. He X., Zhang R., Chen S., Doolen G.D., 1999, On three-dimensional Rayleigh– Taylor instability, Phys. Fluids 11(5): p. 1143.
24. Zhang R., He X., Chen S., 2000, Interface and surface tension in incompressible lattice Boltzmann multiphase model, Comput. Phys. Commun. 129: 121–130.
25. Zhang R., He X., Doolen G., Chen S., 2001, Surface tension effects on two-dimensional two-phase Kelvin-Helmholtz instabilities, Advances in Water Resources 24: 461-478.
26. Zhang R., 2000, Lattice Boltzmann approach for immiscible multiphase flow, Ph.D. thesis, University of Delaware.
27. Inamuro T., Ogata T., Tajima S., Konishi N., 2004, lattice Boltzmann method for incompressible two-phase flows with large density differences, J. Com. Phy.198: 628–644.
28. Lee T., Lin C.L., 2005, A stable discretization of the lattice Boltzmann equation for simulation of in compressible two-phase flows at high density ratio, J. Com. Phy. 206: 16–47.
29. Zheng H.W., Shu C., Chew Y.T., 2006, A lattice Boltzmann for multiphase flows with large density ratio, J. Com. Phy. 218: 353–371.
30. Takada N., Misawa M., A. Tomiyama, S. Hosokawa, 2001, Simulation of bubble motion under gravity by lattice Boltzmann method, Journal of Nuclear Science and Technology 38(5): 330–341.
31. Gupta A., Kumar R., 2008, Lattice Boltzmann simulation to study multiple bubble dynamics, International Journal of Heat and Mass Transfer 51(21-22): 5192–5203.
32. Cheng M., Hua J., Lou J., 2010, Simulation of bubble–bubble interaction using a lattice Boltzmann method, Computers & Fluids 39: 260–270.
33. Yu Z., Yang H., Fan L.S., 2011, Numerical simulation of bubble interactions using an adaptive lattice Boltzmann method, Chemical Engineering Science 66(14): 3441–3451.
34. Shu S., Yang N., 2013, Direct Numerical Simulation of Bubble Dynamics Using Phase-Field Model and Lattice Boltzmann Method, Industrial & Engineering Chemistry Research 52: 11391−11403.
35. Lee T., Fischer P.F., 2006, Eliminating parasitic currents in the lattice Boltzmann equation method for nonideal gases, Phys. Rev. E 74: No. 046709.
36. Lee T., Liu L., 2008, Wall boundary conditions in the lattice Boltzmann equation method for non-ideal gases, Physical Review E 78: No. 017702.
37. Lee T., 2009, Effects of incompressibility on the elimination of parasitic currents in the lattice Boltzmann equation method for binary fluids, Comput. Math. Appl. 58: 987–994.
38. Lee T., Liu L., 2010, Lattice Boltzmann simulations of micron-scale drop impact on dry surfaces, J. Com. Phy. 229: 8045-8063.
39. Amaya-Bower L., Lee T., 2010, Single bubble rising dynamics for moderate Reynolds number using Lattice Boltzmann Method, Computers & Fluids 39: 1191–1207.
40. Amaya-Bower L., Lee T., 2011, Numerical simulation of single bubble rising in vertical and inclined square channel using lattice Boltzmann method, Chemical Engineering Science 66: 935–952.
41. Taghilou M., Rahimian M.H., 2014, Investigation of two-phase flow in porous media using lattice Boltzmann method, Computers and Mathematics with Applications 67: 424–436.
42. Mirzaie Daryan H.M., Rahimian M.H., 2015, Numerical Simulation of Single Bubble Deformation in Straight Duct and 90˚ Bend Using Lattice Boltzmann Method, Journal of Electronics Cooling and Thermal Control 5: 89-118.
43. Haghani R., Rahimian M.H., 2016, Four different types of a single drop dripping down a hole under gravity by lattice Boltzmann method, Journal of Computational Applied Mechanics 47(1): 89-98.
44. Farokhirad S., Morris J.F., Lee T., 2015, Coalescence-induced jumping of droplet: Inertia and viscosity effects, Physics of Fluids 27(10).
45. Fakhari A., Bolster D., 2017, Diffuse interface modeling of three-phase contact line dynamics on curved boundaries: A lattice Boltzmann model for large density and viscosity ratios. Journal of Computational Physics 334: 620-638.
46. Jain P.K., A. Tentner, Rizwan-uddin, 2009, A lattice Boltzmann framework to simulate boiling water reactor core hydrodynamics, Computers and Mathematics with Applications 58: 975-986.
47. Xing X.Q., Butler D.L., Ng S.H., Wang Z., Danyluk S., Yang C., 2007, Simulation of droplet formation and coalescence using lattice Boltzmann-based single-phase model, Journal of Colloid and Interface Science 311: 609–618.