CFD-DEM based full-scale ship-ice interaction research under FSICR ice condition in restricted brash ice channel

Zhang, Jianing; Zhang, Yi; Shang, Ying; Jin, Qiang; Zhang, Lei

doi:10.1016/j.coldregions.2021.103454

Cited by 27 publications

(16 citation statements)

References 17 publications

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“…h denotes the ice thickness, D represents the equivalent diameter of pack ice, determined through conversion and set to 0.079 m. When DEM and CFD are coupled for solution, a smaller time step is required in the DEM component to obtain more accurate results. Following the time step settings in Huang et al [24] and Zhang et al [27], the time step for the coupled CFD-DEM solution is set to 0.005 s in this study.…”

Section: Ice Resistancementioning

confidence: 99%

See 1 more Smart Citation

Numerical Simulation of Ship-Pack Ice-Water Interaction and Motion of Pack Ice Based on CFD-DEM Method

Zou

Tang

Zou

et al. 2023

IOP Conf. Ser.: Mater. Sci. Eng.

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When a ship sails in pack ice area, it not only collides with the ice but also interacts with the water, generating ship-generated waves. The role and influence of ship-generated waves on the ship-ice-water interaction have not been thoroughly studied. In this study, a numerical model with ship-generated waves is established using a coupled Computational Fluid Dynamics (CFD) and Discrete Element Method (DEM), and an appropriate contact model is selected for numerical simulations. Meanwhile, a simplified numerical model without ship-generated waves is proposed. By comparing the simulation results under the same simulation conditions with and without ship-generated waves, the effects of ship-generated waves on the phenomena of ship-ice-water interaction, longitudinal and lateral contact forces between the ship and pack ice, and ice resistance are analysed, along with the underlying mechanisms. The results indicate that the ship-generated waves can mitigate and reduce the collision intensity and contact frequency between the ship and pack ice, resulting in a decrease in the contact forces and ultimately achieving a significant reduction in ice resistance. Furthermore, this mitigation effect becomes more pronounced with increasing ship speed.

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Section: Ice Resistancementioning

confidence: 99%

“…By summarizing and analysing the results, a general empirical formula was derived for rapid ice resistance prediction. Additionally, Luo et al [26] and Zhang et al [27] investigated ice resistance in restricted pack ice channel using model-scale and full-scale ships, respectively.…”

Section: Introductionmentioning

confidence: 99%

Numerical Simulation of Ship-Pack Ice-Water Interaction and Motion of Pack Ice Based on CFD-DEM Method

Zou

Tang

Zou

et al. 2023

IOP Conf. Ser.: Mater. Sci. Eng.

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“…The models can be categorized based on their scenario features into e.g. models on global ice loas in level ice (Tan et al, 2014;Xuan et al, 2021;Li et al, 2020;Li et al, 2020b;Ni et al, 2020) as well as escort in level ice (Liu and Ji, 2021), ice resistance in pack and thin ice (Zong and Zhou, 2019), ship resistance in open-water ice channel (Huang et al, 2021), narrow ice channel (Sazonov and Dobrodeev, 2021;Li et al, 2021) as well as in restricted brash ice channel (Zhang et al, 2022;Luo et al, 2020;Xie et al, 2022), ship resistance in unconsolidated ridges (Gong et al, 2019), resistance in ice floes (Huang et al, 2020(Huang et al, , 2021b, broken ice pieces . In addition, Kim et al (2020) and Sun et al (2022) applied machine learning method to estimate ice resistance based on model test data, while Milaković et al (2020) established machine learning model based on simulation data.…”

Section: Extensive Review Outcomes Outside the Project To Supplement ...mentioning

confidence: 99%

On risk management of shipping system in ice-covered waters: Review, analysis and toolbox based on an eight-year polar project

Kujala

Kuikka

2022

Ocean Engineering

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“…This is because the conventional CFD method discretizes the continuous medium by Euler mesh, which is not available to consider the discontinuous medium such as brash ice. Different from CFD method, DEM method is a kind of the Lagrangian method [2] [3] , which is quite suitable to model ice flow behavior. In DEM method, the ice motion can be easily simulated by the calculation of the contact forces and moments imposed by the other fluid and ice in the interaction region.…”

Section: Introductionmentioning

confidence: 99%

Numerical analysis of the influence of brash ice on propeller performance with CFD-DEM method

Wen

Liu

et al. 2023

3rd International Conference on Applied Mathematics, Modelling, and Intelligent Computing (CAMMIC 2023)

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In this study, the influence of brash ice on propeller performance is numerically analyzed using the coupling method of Computational Fluid Dynamics (CFD) and Discrete Element Method (DEM). Among them, fluid part is modeled with CFD method, while DEM method is applied to model the brash ice and evaluate the ice-ice and ice-propeller interactions. Firstly, we carry out the numerical prediction of propeller performance under ice-free condition, and obtained efficiency coefficient corresponding to different advance coefficients, which show good agreement with experimental data. Subsequently, hydrodynamic performance of propeller in different ice-level sea areas is analyzed by gradually increasing the number of ice injectors in the calculation domain. The results show that when the content of brash ice is relatively limited, the flow characteristics around propeller is less affected, so propeller performance does not change significantly. With the increase of brash ice, the non-uniformity of flow field around the propeller rises rapidly, which leads to the fast deterioration of propeller performance. In the case with 12 DEM ice injectors, the thrust and torque coefficients increase about 10% and 6%, respectively.

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CFD-DEM based full-scale ship-ice interaction research under FSICR ice condition in restricted brash ice channel

Cited by 27 publications

References 17 publications

Numerical Simulation of Ship-Pack Ice-Water Interaction and Motion of Pack Ice Based on CFD-DEM Method

Numerical Simulation of Ship-Pack Ice-Water Interaction and Motion of Pack Ice Based on CFD-DEM Method

On risk management of shipping system in ice-covered waters: Review, analysis and toolbox based on an eight-year polar project

Numerical analysis of the influence of brash ice on propeller performance with CFD-DEM method

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