It is well known that vortex shedding can cause vibration of cylindrical structures. However, an actual case of vortex shedding from a chemical plant distillation column revealed that pipework on the outside of the column can cause the vibration to be significantly enhanced in comparison to that of a bare cylinder. This observation contradicts the commonly held view that equipment and pipework on the outside of cylinders reduces the effects of vortex shedding. Wind tunnel studies on a fully flexible sectional model of the column indicated that in some cases relatively small pipework can increase the vibration by a factor of three in comparison to the vibration of a plain cylinder. The case history, the wind tunnel studies and the solution adopted for the column are described in this paper.

This content is only available via PDF.
You do not currently have access to this content.