文章基本信息

标题：Simulation of Non-Newtonian shear flow over a circular cylinder
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作者：Mohammad Ali Raei ; Atena Ghaderi ; Keivan Fallah 等
期刊名称：International Journal of Mechatronics, Electrical and Computer Technology
印刷版ISSN：2305-0543
出版年度：2014
卷号：4
期号：13
页码：1746-1769
出版社：Austrian E-Journals of Universal Scientific Organization
摘要：In this study, shear flow over a circular cylinder has been investigated numerically usinglattice Boltzmann method. Non-Newtonian behavior of fluid has been considered usingpower law model for non-Newtonian fluids. In particular, the effects of power law index(0.4≤n≤1.8) and shear rate (0≤SR≤0.2) on vortex pattern and flow induced forcesparameters at a fixed Reynolds number (Re=100) are presented in detail. Results show thatthe vortex-shedding frequency significantly decreases with increasing the power-law index.Shear rate also plays the same role and reduces the Strouhal number as it grows. This effectbecomes more evident as the shear rate gets bigger.
关键词：Multiple-relaxation-time Lattice Boltzmann method; Power-law fluids; Drag;coefficient; Lift coefficient; Shear circular cylinder.