Title :
Multiphase flow modeling using Lattice Boltzmann method
Author :
Mushtaq, Saba ; Basit, R.
Author_Institution :
PIEAS, Islamabad, Pakistan
Abstract :
To model the Multiphase flow along with phase transition process is a challenging task. In the present paper, capability of Lattice Boltzmann method (LBM) to simulate flow through complex geometries and multiphase flow has been discussed. LBM is an innovative computational fluid dynamics (CFD) approach based on kinetic models. It describes the physical system as an artificial micro-world of the particles in which the particles simply propagate, collide and interact. To check the validity of LBM, simulations have been performed for two dimensional Poisuelle flow as a test problem and compared with analytical result. Then simulations results for various geometries resembling the porous media, introduced in the flow have also been presented. For the simulation of multiphase flow involving phase transition Shan and Chen model has been used. Periodic boundary conditions have been applied in all directions. Then gravity has been introduced as the driving force. Phase transition occur spontaneously whenever the interaction strength between the particles exceeds its threshold limit. Results have been verified by Laplace law. Finally, it has been concluded that LBM is a simulation method of choice for simulating flow through porous media and multiphase flow.
Keywords :
Laplace equations; Poiseuille flow; flow simulation; flow through porous media; gravity; laminar flow; lattice Boltzmann methods; multiphase flow; CFD approach; Laplace law; Lattice Boltzmann method; artificial microworld; computational fluid dynamics; flow through porous media; gravity; kinetic models; multiphase flow geometries; multiphase flow modeling; multiphase flow simulation; particle collision; particle interaction strength; particle propagation; periodic boundary conditions; phase transition Chen model; phase transition Shan model; physical system; two dimensional Poisuelle flow; Boundary conditions; Computational modeling; Fluids; Gravity; Kinetic theory;
Conference_Titel :
Applied Sciences and Technology (IBCAST), 2013 10th International Bhurban Conference on
Conference_Location :
Islamabad
Print_ISBN :
978-1-4673-4425-8
DOI :
10.1109/IBCAST.2013.6512163