An extended ice failure model to improve the fidelity of icebreaking pattern in numerical simulation of ship performance in level ice

Research output: Contribution to journalArticleScientificpeer-review

Standard

An extended ice failure model to improve the fidelity of icebreaking pattern in numerical simulation of ship performance in level ice. / Li, Fang; Kotilainen, Mikko; Goerlandt, Floris; Kujala, Pentti.

In: Ocean Engineering, Vol. 176, 15.03.2019, p. 169-183.

Research output: Contribution to journalArticleScientificpeer-review

Harvard

APA

Vancouver

Author

Bibtex - Download

@article{16af1dbc5fc1448cbbf8a9b9b4d60ed6,
title = "An extended ice failure model to improve the fidelity of icebreaking pattern in numerical simulation of ship performance in level ice",
abstract = "The modelling of the ice failure including icebreaking pattern and ice bearing capacity is an important issue in numerical simulations of ships going through level ice, in order to predict ship performance and ice loads. Previous studies model the shape of ice cusps assuming a simplified geometry, e.g. circular or triangular. According to the observations during full-scale ship trials, the geometry of the ice cusps is more elliptical rather than circular, with larger breaking length at the edges than that at the center. In this paper, a new ice failure model is developed which results in more realistic cusp shapes compared to existing approaches. The model is based on an analytically-derived differential equation, which is solved numerically via the Finite Difference Method (FDM). The predictions of ice cusps geometry are validated against full-scale measurement of ice cusps, obtained with an on-board stereo camera system. Satisfying agreement is shown. The ice failure model is incorporated into a numerical model for the prediction of ship performance in level ice. The predictions are compared with ship speed record obtained from a full-scale trial. It is shown that the model gives reasonable results for ship speed.",
keywords = "Icebreaking pattern, Level ice, Numerical simulation, Ship performance in ice",
author = "Fang Li and Mikko Kotilainen and Floris Goerlandt and Pentti Kujala",
year = "2019",
month = "3",
day = "15",
doi = "10.1016/j.oceaneng.2019.02.051",
language = "English",
volume = "176",
pages = "169--183",
journal = "Ocean Engineering",
issn = "0029-8018",

}

RIS - Download

TY - JOUR

T1 - An extended ice failure model to improve the fidelity of icebreaking pattern in numerical simulation of ship performance in level ice

AU - Li, Fang

AU - Kotilainen, Mikko

AU - Goerlandt, Floris

AU - Kujala, Pentti

PY - 2019/3/15

Y1 - 2019/3/15

N2 - The modelling of the ice failure including icebreaking pattern and ice bearing capacity is an important issue in numerical simulations of ships going through level ice, in order to predict ship performance and ice loads. Previous studies model the shape of ice cusps assuming a simplified geometry, e.g. circular or triangular. According to the observations during full-scale ship trials, the geometry of the ice cusps is more elliptical rather than circular, with larger breaking length at the edges than that at the center. In this paper, a new ice failure model is developed which results in more realistic cusp shapes compared to existing approaches. The model is based on an analytically-derived differential equation, which is solved numerically via the Finite Difference Method (FDM). The predictions of ice cusps geometry are validated against full-scale measurement of ice cusps, obtained with an on-board stereo camera system. Satisfying agreement is shown. The ice failure model is incorporated into a numerical model for the prediction of ship performance in level ice. The predictions are compared with ship speed record obtained from a full-scale trial. It is shown that the model gives reasonable results for ship speed.

AB - The modelling of the ice failure including icebreaking pattern and ice bearing capacity is an important issue in numerical simulations of ships going through level ice, in order to predict ship performance and ice loads. Previous studies model the shape of ice cusps assuming a simplified geometry, e.g. circular or triangular. According to the observations during full-scale ship trials, the geometry of the ice cusps is more elliptical rather than circular, with larger breaking length at the edges than that at the center. In this paper, a new ice failure model is developed which results in more realistic cusp shapes compared to existing approaches. The model is based on an analytically-derived differential equation, which is solved numerically via the Finite Difference Method (FDM). The predictions of ice cusps geometry are validated against full-scale measurement of ice cusps, obtained with an on-board stereo camera system. Satisfying agreement is shown. The ice failure model is incorporated into a numerical model for the prediction of ship performance in level ice. The predictions are compared with ship speed record obtained from a full-scale trial. It is shown that the model gives reasonable results for ship speed.

KW - Icebreaking pattern

KW - Level ice

KW - Numerical simulation

KW - Ship performance in ice

UR - http://www.scopus.com/inward/record.url?scp=85061972178&partnerID=8YFLogxK

U2 - 10.1016/j.oceaneng.2019.02.051

DO - 10.1016/j.oceaneng.2019.02.051

M3 - Article

VL - 176

SP - 169

EP - 183

JO - Ocean Engineering

JF - Ocean Engineering

SN - 0029-8018

ER -

ID: 32386068