Searched for: department%3A%22Marine%255C%2Band%255C%2BTransport%255C%2BTechnology%22
(1 - 20 of 29,857)
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Wang, J. (author), Yan, Xin ping (author), Boersma, B.J. (author), Lu, Ming jian (author), Liu, Xiaohua (author)Printed circuit heat exchangers (PCHE) are designed to improve heat recovery and energy saving in supercritical CO<sub>2</sub> (S-CO<sub>2</sub>) power cycles. In the current study, a modified channel PCHE is proposed based on the regular straight channel and a zigzag channel. The thermal–hydraulic performance of four different types of PCHE...journal article 2023
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Ozmen, Yucel (author), Boersma, B.J. (author)An experimental study was conducted to search the reduction of friction in fully developed turbulent pipe flow using different types of polyacrylamides as friction reducing polymers. Pressure drop measurements determined the friction reduction. Three different polymer types Superfloc A110, Superfloc A130 and Superfloc A150 were used to...journal article 2023
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Mylonopoulos, F.M. (author), Polinder, H. (author), Coraddu, A. (author)This paper presents a comprehensive literature review of the state-of-the art modeling and optimization methods for the power and propulsion systems of ships. Modeling is a tool to investigate the performance of actual systems by running simulations in the virtual world. There are two main approaches in modeling: physics-based and data-driven...journal article 2023
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Bos, R.W. (author)The energy transition requires the maritime industry to shift to a different fuel. A long term solution is liquefied hydrogen, but there are many challenges to get there. On the short term liquefied natural gas (LNG) might be the most feasible option, because its use relies mostly on existing technologies. It is however not straightforward to...doctoral thesis 2022
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van Benten, M.C. (author), Kougiatsos, N. (author), Reppa, V. (author)This paper presents the design methodology of a mission-oriented modular control system for marine power plants. To this end, first power profiles, power plant layouts and control systems of multiple vessels such as tugboats, offshore support vessels, cargo ships and cruise ships are analyzed. By decomposing the power profile in two components,...journal article 2022
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Fibbe, S.T. (author)Due to increasing cost pressure, disturbances from customs and an opportunity seen in reducing costs by increasing the procurement and construction in the Far East, Damen Shipyards Gorinchem is changing the requirements for its supply chain. Changes to the supply chain however not only inflicts a large number of stakeholders, but the cost...master thesis 2021
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Li, X. (author)A flexible riser is a multi-layered pipe device which enables deep-water production by connecting seabed facilities to floating vessels. To withstand huge hydro-static pressure, it is required to have strong collapse capacities. At present, the collapse capacity of a flexible riser is designed based on a "wet collapse'' concept, in which the...doctoral thesis 2021
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Sapra, H.D. (author), Stam, J.N. (author), Reurings, Jeroen (author), van Biert, L (author), van Sluijs, Wim (author), de Vos, P. (author), Visser, K. (author), Aravind, P.V. (author), Hopman, J.J. (author)The current literature on solid oxide fuel cell and internal combustion engine (SOFC-ICE) integration is focused on the application of advanced combustion technologies operating as bottoming cycles to generate a small load share. This integration approach can pose challenges for ships such as restricted dynamic capabilities and large space...journal article 2021
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Qin, Y. (author), den Besten, J.H. (author), Palkar, S.S. (author), Kaminski, M.L. (author)The characteristic far field response spectrum of welded joints – the governing fatigue sensitive locations in steel marine structures – is predominantly linear elastic, meaning mid- and high-cycle fatigue (MCF and HCF) is most important for design. Using the effective notch stress- and the total stress concept, involving respectively S<sub>e...journal article 2021
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Ye, J. (author), Roy, S. (author), Godjevac, Milinko (author), Baldi, S. (author)Position control for heavy-lift construction vessels is crucial for safe operation during offshore construction. During the various phases of a typical offshore construction assignment, considerable changes in the dynamics of the crane-vessel system occur. Operational hazard was reported if such interchanging dynamics are not properly handled...journal article 2021
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Ye, J. (author), Roy, Spandan (author), Godjevac, Milinko (author), Reppa, V. (author), Baldi, S. (author)Construction crane vessels make use of dynamic positioning (DP) systems during the installation and removal of offshore structures to maintain the vessel's position. Studies have reported cases of instability of DP systems during offshore operation caused by uncertainties, such as mooring forces. DP “robustification” for heavy lift operations...journal article 2021
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Huijgens, L.J.G. (author), Vrijdag, A. (author), Hopman, J.J. (author)Standards for environmental impact, safety and operational performance of ships are becoming increasingly strict. In order to meet these standards, the performance of new ship designs must be predicted with an increasing level of detail and confidence. As present prediction methods lack realistic, dynamic behaviour of the ship's propulsion plant...journal article 2021
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Li, X. (author), Jiang, X. (author), Hopman, J.J. (author)Flexible risers are designed with strong anti-collapse capacities which enable them to operate in deep-water reservoirs. However, this anti-collapse capacity is susceptible to the pipe curvature in the flooded annulus condition. For the curved riser sections within the touch-down zone, significant reduction of collapse capacity can occur once...journal article 2021
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Kong, Xiangshao (author), Zhou, Hu (author), Kuang, Zheng (author), Zheng, Cheng (author), Li, X. (author), Wu, Weiguo (author), Guan, Zhongwei (author)Test on a small scaled model is an effective approach to predict the dynamic response of full scale structure under blast loadings. However, the geometric dimensions of specimens cannot simply comply with complete geometrical similarity due to manufacture or test restrictions. It would result in the difference structural performance between...journal article 2021
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Ye, J. (author)Autonomous vessels have developed into a popular research area in both industry and academia. The application of autonomy in offshore and coastal engineering could offer a safe and efficient solution to offshore transportation and operation. However, the state of the art in research has focused on waterborne transportation. Very limited research...doctoral thesis 2020
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Habben Jansen, A.C. (author), Duchateau, E.A.E. (author), Kana, A.A. (author), Hopman, J.J. (author)Vulnerability reduction is an important topic during the design of naval ships because they are designed to operate in hostile environments and because their on-board distributed systems are becoming increasingly complex. The vulnerability needs to be addressed in the early design stages already, in order to prevent expensive or time...journal article 2020
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Ye, J. (author), Reppa, V. (author), Negenborn, R.R. (author)Offshore structures with large mass are installed and removed by heavy lift vessels. During offshore constructions, two safety-critical interconnected operations take place, the dynamic positioning of the vessel and the lifting of the heavy structure by an immovable boom crane on the vessel. Existing studies on offshore boom crane control...journal article 2020
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Li, X. (author), Jiang, X. (author), Hopman, J.J. (author)As offshore hydrocarbon production moves towards ultra-deep water, flexible risers have to withstand the huge hydro-static pressure without collapse. They are designed with strong collapse capacities, allowing them to operate under the condition where their annuli are flooded by the seawater. However, initial imperfections can weaken the...journal article 2020
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Li, Z. (author), Jiang, X. (author), Hopman, J.J. (author), Zhu, Ling (author), Liu, Zhiping (author)In the present paper, we propose an analytical method to calculate the Stress Intensity Factor (SIF) of circumferential surface cracks in steel pipes subjected to bending. In light of pipe geometry and bending load case, the analytical formula is raised by introducing new bending correction factors and new geometry correction factors on the...journal article 2020
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Chen, L. (author), Huang, Y. (author), Zheng, Huarong (author), Hopman, J.J. (author), Negenborn, R.R. (author)Urban waterways have great potential in cargo transport to relieve the congestion in the overloaded road networks. This paper explores the potential of applying cooperative multi-vessel systems (CMVSs) to improve the safety and efficiency of transport in urban waterway networks. A framework consisting of vessel train formation (VTF) and...journal article 2020
Searched for: department%3A%22Marine%255C%2Band%255C%2BTransport%255C%2BTechnology%22
(1 - 20 of 29,857)