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

当流动的水清除覆盖管道的泥沙时，管道会产生涡激振动。 埋藏在水道交叉处，如河流或小溪下面的。一旦有限长度的管子完全 暴露的情况下，涡流将开始周期性地从管道上方和下方脱落。旋涡脱落 在管道中引起振动，最终可能导致管道故障，潜在地导致显著的 造成环境和经济损失。拟议的研究项目旨在生产一个工程软件 可预测涡激振动引起的管道故障风险的模型。该软件工具将是 开发了一系列涡激振动的计算流体力学模拟 水下管道。这些模拟将建立一个基本的了解各种河流流量的影响。 条件和管道几何参数对涡激的开始、大小和频率的影响 震动。根据这个基本的理解，一个基于软件的模型来预测发病，震级， 并开发了涡激振动的频率。这样的模式将是国内首个此类模式 管道行业。它将为工程师提供一种更准确的方法来评估管道的风险 水道道口出现故障。考虑到北美的许多管道穿越，这项研究 项目将转化为更安全的环境条件，并为管道维护节省大量成本 并进行修复。这项研究还为未来的研究或商业化机会打开了可能性 其他水下结构物基于模拟的风险评估平台，包括桥墩和 离岸风力涡轮机。

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.