Study of Vortex Characteristics of the Flow Around a Horizontal Circular Cylinder at Various Gap-Ratios in the Cross-Flow

An insight in spatial corrosion prediction

“…Also computed were the wave force coefficients and velocity fields and these were later verified with results reported [3]. Whereas the other studies dealt with understanding vortex characteristics exerted by cross flows around a horizontal circular cylinder [2].…”

“…With the aid of a particle image velocimetry probe, similar vortex formation was also visualized [2]. Since this work only involved cross flows and e/D was equal to 0, the location of the vortex was only limited to the downstream section of the cylinder and no flow passed under the cylinder, as shown in Fig.…”

“…Earlier studies have demonstrated the significance of vortex formations surrounding a circular cylinder placed on a wall [1,2]. These studies were looking at the response under different vertical distances between the wall and the cylinder.…”

“…For pipelines very close to the sea bed with a given ratio e/D of 0.09 (approximately 0), both the wave crest and trough produced vortex flows to the cylinder [2]. [Here e denotes the distance between the sea bed and the lower part of the pipeline and D is the pipe diameter].…”

“…For this, a 28 00 diameter steel offshore pipeline type API 5LX-65 containing external corrosions placed on sea bed in shallow water was chosen. Theories as proposed by [1,2] were compared with the field data. The authors' works were taken to represent as the 'models' while the pipeline candidate from the field as the 'prototype'.…”