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2.2 LBGK Boltzmann Method .................................... 6
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º»¹®³»¿ë Cylinder-like structures can be found, both alone and in groups, for example in the design for heat exchangers, cooling systems for nuclear power plants, offshore structures, buildings, chimneys, power lines, struts, grids, screens, and cables, in both air and water flow. In many of these engineering applications, the periodic shedding of Karman vortices is responsible for problem with flow-induced vibration and noise. At the laminar flow in the circular cylinder, vortex shedding phenomenon did not occur. But under a same environment, the alteration of the arrangements of the cylinders can bring out the change of flow patterns, and vortex shedding.

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