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Original Articles

Numerical simulation of flow past a curved cylinder in uniform and logarithmic flow

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Pages 323-329 | Received 22 Jul 2015, Accepted 04 Jan 2016, Published online: 21 Apr 2016
 

Abstract

This research presents a computational fluid dynamics study for simulating a curved cylinder in ocean currents. A rigid curved cylindrical geometry with two bending directions was modelled in uniform and logarithmic flow profiles at a maximum Reynolds number of 1.5 × 105; the Realizable k–epsilon formulation is used as the turbulence closure model. An analysis of force coefficients and vortex structure are presented. The results show that a curved cylindrical structure will have different hydrodynamic behaviour depending on the oncoming flow direction. Bending the cylinder in a direction which is opposite to the predominant flow direction is recommended, as the maximum forcing amplitude is reduced in this case.

Disclosure statement

No potential conflict of interest was reported by the authors.

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