Numerical Study on Cross-Flow around Three Cylinders Using Lattice Boltzmann Method

Xiang Cui Lv; Wei Zhang; Dian Xin Zhang

doi:10.4028/www.scientific.net/AMM.525.311

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 525Numerical Study on Cross-Flow around Three...

Numerical Study on Cross-Flow around Three Cylinders Using Lattice Boltzmann Method

Abstract:

The flow around three cylinders in isosceles left-triangle and right-triangle configurations at Reynolds number of 200 are investigated using lattice Boltzmann method (LBM). Vortex shedding pattern and evolution process in the wake of each cylinder in the two cases are analyzed with a spacing ratio of 4. Results show that the flow pattern in the right-triangle configuration is symmetrical and the vortex shedding is anti-phase. Meanwhile, vortex shedding in-phase is observed in the left-triangle configuration which is due to the effect of the periodical vortex shedding behind upstream cylinder. The evolution process of vortex in the wakes of the cylinders for left-triangle configuration is simulated numerically.