A Numerical Simulation of Pack Ice Movement Using the Momentum Conservation Method PDF Download
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Author: C. K. Rheem
Publisher:
ISBN:
Category :
Languages : en
Pages : 7
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Author: C. K. Rheem
Publisher:
ISBN:
Category :
Languages : en
Pages : 7
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Author:
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Category : Marine biology
Languages : en
Pages : 900
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Author: Jie Dai
Publisher:
ISBN:
Category :
Languages : en
Pages :
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This thesis investigates the numerical modelling of Dynamic Position (DP) in pack ice. A two-dimensional numerical model for ship-ice interaction was developed using the Discrete Element Method (DEM). A viscous-elastic ice rheology was adopted to model the dynamic behaviour of the ice floes. Both the ship-ice and the ice-ice contacts were considered in the interaction force. The environment forces and the hydrodynamic forces were calculated by empirical formulas. After the current position and external forces were calculated, a Proportional-Integral-Derivative (PID) control and thrust allocation algorithms were applied on the vessel to control its motion and heading. The numerical model was coded in Fortran 90 and validated by comparing computation results to published data. Validation work was first carried out for the ship-ice interaction calculation, and former researchers' simulation and model test results were used for the comparison. With confidence in the interaction model, case studies were conducted to predict the DP capability of a sample Arctic DP vessel.
Author: Claire Lucille Parkinson
Publisher:
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Category :
Languages : en
Pages :
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Author: Tom Carrieres
Publisher: Cambridge University Press
ISBN: 1108279546
Category : Science
Languages : en
Pages : 263
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This book provides an advanced introduction to the science behind automated prediction systems, focusing on sea ice analysis and forecasting. Starting from basic principles, fundamental concepts in sea ice physics, remote sensing, numerical methods, and statistics are explained at an accessible level. Existing operational automated prediction systems are described and their impacts on information providers and end clients are discussed. The book also provides insight into the likely future development of sea ice services and how they will evolve from mainly manual processes to increasing automation, with a consequent increase in the diversity and information content of new ice products. With contributions from world-leading experts in the fields of sea ice remote sensing, data assimilation, numerical modelling, and verification and operational prediction, this comprehensive reference is ideal for students, sea ice analysts, and researchers, as well as decision-makers and professionals working in the ice service industry.
Author: Tōkyō Daigaku. Kōgakubu
Publisher:
ISBN:
Category : Engineering
Languages : en
Pages : 1208
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Author: Ryszard Staroszczyk
Publisher: Springer
ISBN: 3030030385
Category : Science
Languages : en
Pages : 344
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This book presents the concepts and tools of ice mechanics, together with examples of their application in the fields of glaciology, climate research and civil engineering in cold regions. It starts with an account of the most important physical properties of sea and polar ice treated as an anisotropic polycrystalline material, and reviews relevant field observations and experimental measurements. The book focuses on theoretical descriptions of the material behaviour of ice in different stress, deformation and deformation-rate regimes on spatial scales ranging from single ice crystals, those typical in civil engineering applications, up to scales of thousands of kilometres, characteristic of large, grounded polar ice caps in Antarctica and Greenland. In addition, it offers a range of numerical formulations based on either discrete (finite-element, finite-difference and smoothed particle hydrodynamics) methods or asymptotic expansion methods, which have been used by geophysicists, theoretical glaciologists and civil engineers to simulate the behaviour of ice in a number of problems of importance to glaciology and civil engineering, and discusses the results of these simulations. The book is intended for scientists, engineers and graduate students interested in mathematical and numerical modelling of a wide variety of geophysical and civil engineering problems involving natural ice.
Author:
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Category : Cold regions
Languages : en
Pages : 578
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Category : Aeronautics
Languages : en
Pages : 702
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Author:
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ISBN:
Category : Coast changes
Languages : en
Pages : 640
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