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Indexed by:期刊论文

Date of Publication:2018-06-01

Journal:CHINA OCEAN ENGINEERING

Included Journals:SCIE

Volume:32

Issue:3

Page Number:245-255

ISSN No.:0890-5487

Key Words:submerged horizontal circular cylinder; wave force; lift force; vortex effect

Abstract: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.