Hydrodynamics & Ship Design:Optimization of Ships for Minimum Power and Safe Navigation in Adverse Weather Conditions
41st Weinblum Memorial Lecture
2018 IMDC Conference
For the 13th International Marine Design Conference in Helsinki, FInland the HOLISHIP project has submitted the following paper, which can be downloaded from this space:
HOLISTIC Ship Design Optimisation, J. Marzi, A. Papanikolaou, J. Brunswig,P. Corrignan, L. Lecointre, A. Aubert, G. Zaraphonitis, S. Harries
The present paper describes the HOLISHIP–Holistic Optimisation of Ship Design and Operation for Life Cycle project approach to ship design and operation and demonstrates a subset of its functionality on the basis of a case study. This refers to a RoPAX ferry optimisation for minimum powering requirements and maximum life-cycle economic performance in realistic operating conditions by use of concurrent engineering tools from different project partners operating in collaboration on a common design software platform. The impact of al-ternative operating/speed scenarios on case study ship’s efficiency and safety is presented and discussed.
2018 TRA Conference
For the 2018 TRA conference in VIenna the HOLISHIP project has submitted several papers which can be downloaded from this space:
1. HOLISTIC Ship Design for Future Waterborne Transport, J. Marzi, A. Papanikolaou, P. Corrignan, G. Zaraphonitis, S. Harries
The H2020 European Research project – HOLISHIP – Holistic Optimisation of Ship Design and Operation for Life Cycle (2016-2020) sets out to substantially advance ship design to achieve much improved vessel concepts for the 21st century. This innovative design approach, which is implemented into an integrated design software platform, considers all relevant ship design aspects, namely energy efficiency, safety, environmental compatibility, production and life-cycle cost. In the present paper we demonstrate parts of the HOLISHIP approach by the optimisation of a RoPAX ship using concurrent hydrodynamic and machinery simulation software tools to improve the design and operational behaviour of the vessel. This exercise is conducted by different partners in different sites on a common data set for the study vessel. The conducted multi-objective optimisation for improved efficiency and safety uses parametric models for ship’s hull form and internal arrangements, and demonstrates the functionality of the adopted approach in a complex design problem.
2. Parametric design and holistic optimisation of post-panamax containerships, Alexandros Priftis, Evangelos Boulougouris, Osman Turan
The fluctuation of fuel price levels, along with the continuous endeavour of the shipping industry for economic growth and profits has led the shipbuilding industry to explore new designs for various types of merchant ships. Moreover, the introduction of new regulations by the IMO has added further constraints to the ship design process. In this respect, proper use of modern CAD/CAE systems extends the design space, while generating competitive designs in short lead time. This study deals with the parametric design and holistic optimisation of a post-panamax containership. The methodology includes a complete parametric model of a containership’s external and internal geometry, as well as the development and coding of all tools required for the determination of both the design constraints and the efficiency indicators, which are used for evaluating the parametrically generated designs. The second-generation intact stability criteria are taken into consideration in the optimisation process. The set-up multi-objective optimisation problem is solved by use of the genetic algorithms and clear Pareto fronts are generated.
3. Compliance matrix model based on ship owners’ operational needs, Alan Guegan, Romain Le Néna, Benoît Rafine, Laurent Descombes, Hanane Fadiaw, Pierre Marty, Philippe Corrignan
Automation, embedded software, stringent regulation and customer expectations have increased the complexity of ship design and requirements management. The requirements management approach described here brings two innovations with respect to existing tools used in the shipbuilding industry. First, requirements are assigned to operational scenarios rather than physical components to emphasize the focus on customer needs rather than subsystem optimization. Second, a tool based on a microservices architecture is introduced to manage scenario-centered “communities of interest” to which system architecture blocks and requirements subscribe depending on their involvement in the scenario. System architecture, operational scenarios, customer requirements are designed and managed in separate tools and the overall consistency of the design – reflected in the compliance matrix model – is preserved within each “community” they belong to. Collaborative ship design where partners provide diverse contributions to the design of a single vessel could benefit from such an approach.