The Calculation Method of Ice Resistance in Level Ice by the Ice-Covered Hull Model

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  • 氷片膜モデルによる氷中抵抗の推定法
  • ヒョウヘンマク モデル ニ ヨル コオリ チュウ テイコウ ノ スイテイホウ

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Abstract

<p>In order to estimate an ice resistance in level ice considering the underwater hull geometry, the calculation method was developed. This method uses the Ice-Covered hull Model (ICHM) which estimates ice pieces distribution on hull surface considering that ice pieces' rotation (around water line), concentration and clearing. In this method, an ice resistance due to bending failure is calculated based on Ionov's method. In addition, an ice resistance due to ice pieces is calculated on the basis of ice pieces distribution and movement in ICHM. As the results of comparing with ice tank tests, this method was able to estimate the ice resistance well.</p>

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