A simulation-based assessment tool of pipeline failure via vortex-induced vibration at watercourse crossings

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Vortex-induced vibration of a pipeline is caused when flowing water removes the sediment covering a pipeline that is buried beneath a watercourse crossing, such as a river or stream. Once a finite length of pipe is fully exposed, vortices will begin to shed from above and below the pipe in a periodic manner. Vortex shedding induces vibrations in the pipeline that can eventually result in its failure, potentially causing significant environmental and economic damages. The proposed research project aims to produce an engineering software model that can predict the risk of pipeline failure due to vortex-induced vibrations. The software tool will be developed through a series of computational fluid dynamics simulations of vortex-induced vibration in submerged pipelines. The simulations will build a fundamental understanding the impact of various river flow conditions and pipeline geometrical parameters on the onset, magnitude, and frequency of vortex-induced vibration. From this fundamental understanding, a software-based model for predicting the onset, magnitude, and frequency of vortex-induced vibration will be developed. Such a model would be the first of its kind within the pipeline industry. It would provide engineers a more accurate approach to assessing the risk of pipeline failure at watercourse crossings. Considering the many pipeline crossings in North America, this research project will translate into safer environmental conditions and significant cost savings for pipeline maintenance and repair. The research also opens up possibilities for future research or commercialization opportunities as a platform for simulation-based risk assessment in other submerged structures, including bridge piers and off-shore wind turbines.