Volume 18, Issue 3 (2018)                   Modares Mechanical Engineering 2018, 18(3): 417-428 | Back to browse issues page

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Jalali H, Kamali Moghadam R. Lattice Study of the Finite Volume-Lattice Boltzmann Method in Simulation of Laminar Viscous Compressible Flow. Modares Mechanical Engineering. 2018; 18 (3) :417-428
URL: http://journals.modares.ac.ir/article-15-6840-en.html
1- Assistance Professor, Aerospace Research Institute, (Ministry of Science, Research and Technology), Tehran, Iran
2- Faculty
Abstract:   (1915 Views)
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 N.S. solutions. Although the results have desirable accuracy in comparison of those of the N.S. solutions, limitation of the presented method and results assessment obtained by the different lattices have been investigated.
Article Type: Research Article | Subject: Lattice-Boltzmann Method
Received: 2017/11/27 | Accepted: 2018/02/8 | Published: 2018/03/10

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