Scour development around submarine pipelines due to current based on the maximum entropy theory

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• 作者：Jing Zhang ; Bing Shi ; Yakun Guo ; Weilin Xu…
• 关键词：Key wordssubmarine pipeline ; current ; scour development ; maximum entropy theory
• 刊名：Journal of Ocean University of China
• 出版年：2016
• 出版时间：October 2016
• 年：2016
• 卷：15
• 期：5
• 页码：841-846
• 全文大小：373 KB
• 刊物主题：Oceanography; Meteorology;
• 出版者：Springer Berlin Heidelberg
• ISSN：1993-5021
• 卷排序：15

文摘

This paper presents the results from laboratory experiments and theoretical analysis to investigate the development of scour around submarine pipeline under steady current conditions. Experiments show that the scour process takes place in two stages: the initial rapid scour and the subsequent gradual scour development stage. An empirical formula for calculating the equilibrium scour depth (the maximum scour depth) is developed by using the regression method. This formula together with the maximum entropy theory can be applied to establish a formula to predict the scour process for given water depth, diameter of pipeline and flow velocity. Good agreement between the predicted and measured scour depth is obtained.