Ice Floe - an overview | ScienceDirect Topics
网页2003年3月3日 · Ice floes are generally described by their thickness h and diameter d; models of drift ice examine a field ice floes. For continuum models to be valid for drift ice, the size of continuum material particles D must satisfy d ≪ D ≪ Λ, where Λ is the gradient length-scale of material properties of drift ice.
A theoretical investigation of ship ice resistance in waters covered ...
网页2019年8月15日 · To make the present theory applicable to ice floes used in model tests, we request the typical length of an ice floe and the ship length satisfy the following relation (1) ε = L i / L s ≪ 1 where L i is the typical length of an ice floe and L s is the ship length. A rule of thumb is ε < 0.1.
Ship resistance when operating in floating ice floes: A combined …
网页2020年11月1日 · Ice-floe resistance in different-sized floes (floe diameters of [4] globally scaled by a factor), obtained when Fr = 0.15 and h = 0.02 m. The influence of ice thickness on the resistance is studied by varying h while keeping other parameters constant. Fig. 17 presents the ice resistance when h = 0.004–0.02 m, and for C = 40% and 60%.
Response of small sea ice floes in regular waves: A comparison of ...
网页2017年1月1日 · In order to further understand kinematics of ice floes in water waves, McGovern and Bai (2014a) conducted an experiment in a wave flume to investigate in detail the kinematic and dynamic response of ice floes, their drift velocity, the influence of body geometry, thickness and other parameters. They concluded that the ice floe's motion can …
Experimental study of wave transmission and drift velocity using …
网页2022年5月1日 · The drift velocity of ice floes in the ice-covered ocean is an important factor to estimate the impact forces and loads produced by the ice floe (Huang et al., 2011; McGovern and Bai, 2014; Wang et al., 2020) and the collision velocity (Yiew et al., 2017). The drift velocity of model ice floes was evaluated using snapshots extracted from the …
Level Set Discrete Element Method for modeling sea ice floes
网页2023年3月1日 · For LS-ICE we couple LS-DEM with a thermodynamic model of the ocean, to test the sea ice model’s behavior in summer Arctic-like conditions. This involves the evolution of a relatively packed field of sea ice floes (∼ 80% concentration) into a domain practically devoid of ice, within the course of 1–2 months.
Ship resistance when operating in floating ice floes: Derivation ...
网页2021年9月1日 · In the ASPM, ice resistance is classified into large ice floes and small ice floes. These two conditions correspond to significantly different physics during the ship-ice interactions. Large ice floes undergo crushing and break-up when ships are operating through them, and the ultimate of this case is level ice.
A two-way coupling method for simulating wave-induced breakup …
网页2023年9月1日 · Fewer researchers did treat the ice floes as deformable but nonbreaking bodies. Squire [56] proposed a numerical model based on finite element techniques to compute the flexure of an arbitrarily shaped ice floe in ocean waves. Zhang et al. [76], [77] developed a two-dimensional model to study the deformation and stress of the ice floes. …
Experimental study of ship resistance in artificial ice floes
网页2020年8月1日 · Abstract. In this paper, a model-scale ship towing experiment is conducted to investigate the ship resistance in small ice floes. Instead of using refrigerated model ice, artificial ice floes made of Polypropylene (PP) is used in the tests based on the assumption that the dominant motion modes of small ice floes in water are rigid-body ones ...
Laboratory study of wave-induced flexural motion of ice floes
网页2021年2月1日 · The elasticity of ice increases the wavelength. POD and SOD successfully identify wave-induced ice floe flexural modes. Weak nonlinearity is found in the wave-induced flexural response of ice floes. The nonlinearity originates from incoming waves and most likely arises from interfloe interactions as well.