Comparative Study of Ice Gouge Simulation Considering Ice Keel-Seabed Interactions

• Published in: Journal of Ocean Engineering and Technology
• Main Authors: Mun-Beom Shin, Dong-Su Park, Young-kyo Seo
• Format: Article in Journal/Newspaper
• Language: English
• Published: The Korean Society of Ocean Engineers 2019
• Subjects: ice gouge; ice keel; ice keel-seabed interaction; cel(coupled eulerian lagrangian) method; arctic pipeline; Ocean engineering; TC1501-1800; Arctic
• Online Access: https://doi.org/10.26748/KSOE.2019.036; https://doaj.org/article/f7d778cbc7a24300b3f7e2c17a8301d5

The ice keel gouge and seabed interaction is one of the major considerations in the design of an Arctic pipeline system. Ice keel and seabed interaction engineering models based on experimental data, which give an explicit equation for estimating the ice gouging depth, have been suggested. The suggested equations usually overestimate the ice keel gouging depth. In addition, various types of numerical analyses have been carried out to verify the suggested engineering model equations in comparison to the experimental data. However, most of numerical analysis results were also overestimated compared with the laboratory experimental data. In this study, a numerical analysis considering the contact condition and geostatic stress was carried out to predict the ice keel gouging depth and compared with the previous studies. Considering the previously mentioned conditions, more accurate results were produced compared with the laboratory experiment results and the error rate was reduced compared to previous numerical analysis studies.