Analytical Model of Navigable Channel Evolution in Ice Conditions

Karulin, Evgeny; Karulina, Marina; Tarovik, Oleg V.

doi:10.17736/ijope.2019.ik05

Cited by 4 publications

(2 citation statements)

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“…However, parametrisation and estimation of such coefficients require more observations and measurements. Improved theoretical models were reported by Chomatas (2015), Riska and others (2014, 2019) and Karulin and others (2019). The side ridge formation, radiation and snow cover influence on the brash ice development are not fully considered in these models.…”

Section: Introductionmentioning

confidence: 78%

A review of level ice and brash ice growth models

et al. 2021

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Brash ice forms in harbours and ship channels from frequent ship passages and the resulting freezing–breaking cycles create a unique ice formation. The brash ice accumulation over the winter season is a result of meteorological, thermodynamical and mechanical processes. A reliable brash ice growth model is an important asset when determining navigation routes through ice conditions and when establishing port ice management solutions. This review aims to describe the brash ice development and its modelling as well as the key parameters that influence the brash ice growth and its estimation. This paper summarises the brash ice growth models and the fundamental theories of level ice growth upon which these models are based, and outlines the main knowledge gaps. The results highlight the importance of porosity and piece size distribution and their effect on the consolidation process. The inclusion of the brash ice lateral movement and the side ridge formation would improve the accuracy of forecast models. Furthermore, the findings of the study identify the effect of omitting meteorological parameters such as snow and radiation, from the brash ice growth models. Their contribution to the level ice thickness suggests a significant influence on the brash ice consolidation process.

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Section: Introductionmentioning

confidence: 78%

A review of level ice and brash ice growth models

et al. 2021

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“…The mechanism of the ice field's breakdown in contact with a fixed obstacle has been the subject of theoretical studies and models, and is fairly well known at present [1][2][3][4]. The drift of the ice cover as a whole and the drift of the single ice fields, their pressure on the obstacle or the collision with it, accompanied by brittle destruction into small ice cakes, which form the pile owing to sinking part of ice cakes to the bottom and rising of rest part to the ice surface, are the obvious and understandable mechanisms of the phenomenon.…”

Section: Introductionmentioning

confidence: 99%

Wind Drift, Breakdown, and Pile Up of the Ice Field

Goncharov

2023

JMSE

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This article contains the analytical model of the drift of a separate ice field under the action of wind and current, in which velocities and directions can vary over time. The model takes into account the mass of ice, added mass of seawater, and the effects of the wind and current on the ice field in forming the friction on its upper and underwater surfaces and the frontal resistance on its end (forward and backward) surfaces. Simulation of the wind drift of the ice field showed the drift velocity exceeds the considerable known velocity of a compact ice cover drift. A drifting ice field has a certain kinetic energy that should be released when a collision occurs with an unmovable obstacle, and spent on brittle breakdown of a quantity of the ice field. The volume of formed small ice pieces (fragments of ice field) was estimated by comparison of the specific energy of the sea ice brittle destruction and the kinetic energy of the drifting ice field. The article presents the results of the estimation of the possible volume of the ice pieces and the scales of formed piles as a result of a collision with an obstacle, depending on the initial dimensions of the ice field and wind speed. Developed models and the results of computer modeling can be used to estimate the ice pile sizes near the stationary platforms and terminals on the Arctic seas.

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Wind Drift, Breakdown and Pile up of the Ice Field

Goncharov¹

2023

Preprint

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Article contents the analytical model of the drift of a separate ice field under action of wind and current, which velocities and directions can vary during time. Model takes into account the mass of ice, added mass of sea water and the effects of the wind and current on the ice field in form the friction on its upper and underwater surfaces and frontal resistance on its end (forward and backward) surfaces. Results of performed the steady wind drift of the ice fields modelling show the drift velocity exceeds considerable known velocity of a compact ice cover wind drift. Drifting ice field has the certain kinetic energy that should be released when collision with unmovable obstacle and spent on brittle breakdown of part of the ice field. Volume of formed small ice pieces (fragments of ice field) was estimated by comparison of the specific energy of the sea ice brittle destruction and the kinetic energy of drifting ice field. Article presents the results of estimation of possible volume of the ice pieces and the scales of formed piles as result of collision with an obstacle depending on initial dimensions of ice field and wind speed. Developed models and the results of computer modelling can be used to estimate the ice pile sizes near the stationary platforms and terminals on the Arctic seas.

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Analytical Model of Navigable Channel Evolution in Ice Conditions

Cited by 4 publications

References 0 publications

A review of level ice and brash ice growth models

A review of level ice and brash ice growth models

Wind Drift, Breakdown, and Pile Up of the Ice Field

Wind Drift, Breakdown and Pile up of the Ice Field

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