Lattice Study of the Finite Volume-Lattice Boltzmann Method in Simulation of Laminar Viscous Compressible Flow

H Jalali, R Kamali Moghadam - Modares Mechanical …, 2018 - mme.modares.ac.ir
Modares Mechanical Engineering, 2018mme.modares.ac.ir
A Finite Volume-Lattice Boltzmann Method (FVLBM) for simulation of viscous laminar
compressible flows in 2-D structured curvilinear coordinate system has been developed. In
the present study, validation of the presented software and accuracy assessment of four new
2D lattices D2Q9L2, D2Q13L2, D2Q17L2 and D2Q21L2 based on increasing discrete
velocities of lattice has been studied and the optimum lattice has been introduced. The
presented LBM has developed using new method of circular function idea instead of …
A Finite Volume-Lattice Boltzmann Method (FVLBM) for simulation of viscous laminar compressible flows in 2-D structured curvilinear coordinate system has been developed. In the present study, validation of the presented software and accuracy assessment of four new 2D lattices D2Q9L2, D2Q13L2, D2Q17L2 and D2Q21L2 based on increasing discrete velocities of lattice has been studied and the optimum lattice has been introduced. The presented LBM has developed using new method of circular function idea instead of expansion or correction of Maxwelian function for evaluation of equilibrium distribution functions. Moreover, in order to capture discontinuities in the flow field, 3rd order MUSCL scheme has been implemented for approximation of convective term. The laminar compressible viscous flow over the NACA0012 airfoil has been simulated in the curvilinear coordinate system for two angle of attacks, 0 and 10 Deg. The obtained results have been compared with validated NS solutions. Although the results have desirable accuracy in comparison of those of the NS solutions, limitation of the presented method and results assessment obtained by the different lattices have been investigated.
mme.modares.ac.ir
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