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论文类型：期刊论文

发表时间：2018-06-01

发表刊物：CHINA OCEAN ENGINEERING

收录刊物：SCIE

卷号：32

期号：3

页面范围：245-255

ISSN号：0890-5487

关键字：submerged horizontal circular cylinder; wave force; lift force; vortex effect

摘要：Numerical simulations are carried out for wave action on a submerged horizontal circular cylinder by means of a viscous fluid model, and it is focused on the examination of the discrepancies between the viscous fluid results and the potential flow solutions. It is found that the lift force resulted from rotational flow on the circular cylinder is always in anti-phase with the inertia force and induces the discrepancies between the results. The influence factors on the magnitude of the lift force, especially the correlation between the stagnation-point position and the wave amplitude, and the effect of the vortex shedding are investigated by further examination on the flow fields around the cylinder. The viscous numerical calculations at different wave frequencies showed that the wave frequency has also significant influence on the wave forces. Under higher frequency and larger amplitude wave action, vortex shedding from the circular cylinder will appear and influence the wave forces on the cylinder substantially.