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In this paper, unsteady viscous-flow cavitation predictions for a 3D hydrofoil are performed using three different approaches: a pure RANS method, a RANS method including an eddy-viscosity "Reboud" correction, and a DDES Scale-Resolving-Simulation approach. Both wetted and cavitating flow conditions are analysed and compared with experimental data. The accuracy of these approaches is scrutinised in

The prediction of cavitation is of large interest for the design of ship propellers. Cavitation influences the propeller efficiency and causes undesired phenomena such as noise, vibrations and erosion. While potential flow solvers are routinely used for propeller design, viscous CFD calculations are used when a higher fidelity is needed. Within a finite volume framework,

MARIN is always keen to anticipate and help in transitions in shipping. An increase in sustainability and a reduction in CO2 emissions is a transition that we believe is about to start. One potential solution is Wind Assisted Ship Propulsion and this has led to two new JIPs. WiSP Within Wind Assisted Ship Propulsion (WiSP)

Joint Industry Projects Offshore Maintenance I & II focus on the operability of wind park maintenance vessels. The objective of the Offshore Maintenance (OM) JIP Part I is to select the most suitable maintenance strategy and vessel for a wind park for any time of the year. Part II focuses on the short-term, access strategy

Report interviewed Aziz Merchant, Executive Director of Keppel Offshore & Marine Technology Centre (KOMtech), about the most significant changes in the floating production industry, their innovations and the joint work with MARIN. Read the complete article or subscribe to receive your own personal copy of MARIN Report magazine. Download the MARIN Report App combining the

MARIN started a Joint Industry Project (JIP) to develop a new fixed-pitch propeller series: The Wageningen F-series. In a Joint Industry Project (JIP) a standard series of fixed-pitch propellers will be developed which encompasses design features of contemporary propellers. The new series will be designed for best achievable efficiency, while simultaneously taking into account requirements

2018年5月15日至17日，MARIN于上海举办2018年度船舶水动力设计互动课程培训，7名MARIN的资深专家为大家授课，来自行业内船厂、研究所及船级社的员工参加了此次培训，培训课程包括阻力与推进、CFD计算、耐波性、操纵性和水动力与结构分析等。如果您对MARIN的其他课程有兴趣，请访问http://www.marin.nl/Courses。 Again, MARIN has successfully  held another interactive course on "Hydrodynamics in Ship Design" in Shanghai. The course was followed by experts from shipyard, institute and Classification society. Topics such as resistance and propulsion, Computational fluid dynamics, seakeeping, manoeuvring and hydro-structural were covered during the course. More information on MARIN courses can be found on

A practical and efficient system is described for ship hull form optimisation and its application for minimising wave resistance. Parametric hull form deformations are defined in a CAD system, specific for the case considered and related with flow aspects to be addressed. Surrogate-based global optimisation is applied for multi-objective problems, such as optimisation for a

To correct ship speed trials for limited shallow-water effects, Lackenby’s method is currently recommended by the ITTC. This method appears to be based on very few and inadequate data. To replace it, a new procedure is proposed. It corrects separately for the effects of shallow water on the different components of ship resistance. These have