Co-simulation as a Fundamental Technology for Twin Ships

Hatledal, Lars Ivar; Skulstad, Robert; Li, Guoyuan; Styve, Arne; Zhang, Houxiang

doi:10.4173/mic.2020.4.2

Cited by 23 publications

(6 citation statements)

References 35 publications

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“…The developed hybrid power system model can be used for real-time virtual testing. Finally, co-simulation was also used in [24] and [25] using Euler and Runge Kutta as integration methods for the different FMUs. The aim in both studies was to investigate the ships' hydrodynamic performances under different conditions.…”

Section: A Physics-based Modelingmentioning

confidence: 99%

A Comprehensive Review of Modeling and Optimization Methods for Ship Energy Systems

2023

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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, which are both covered in detail in this survey paper. The output from the simulations might not be optimal in terms of certain performance criteria such as energy consumption, fuel cost etc. Hence, it is vital to optimize the systems considering the efficient interaction between the components, to yield the optimal performance for the integrated vessel's powertrain. In this paper, the optimization case studies, for the ship energy systems, will be divided in terms of a) optimal design (topology and sizing), b) optimal control and energy management strategies, c) combined optimal design and control. Tables that summarize the literature review outcomes will also be presented at the end of each section. The main outcome is that limited literature is available for optimizations of ship powertrains using datadriven models, especially surrogate models. Surrogate-assisted optimizations for integrated ship energy systems can yield optimal solutions at fast computational speeds, with sufficient accuracy, even for complex, nested, multi-level, multi-objective optimizations.

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Section: A Physics-based Modelingmentioning

confidence: 99%

A Comprehensive Review of Modeling and Optimization Methods for Ship Energy Systems

2023

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“…The content is simplified to enable developers to quickly grasp and utilize it. Although it may not be as robust as other frameworks, it offers fast and convenient usage 23,24 …”

Section: Introductionmentioning

confidence: 99%

An auxiliary development framework for lightweight RPG games based on Unity3D

Zhang,

Shi,

Wang

2023

Computer Animation & Virtual

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With the growing prevalence of virtual reality technology across industries like cinema, video animation, and gaming, game developers must cater to a wider range of players. Game engines serve as middleware, reducing the time spent on coding and improving productivity for creating video games. While mainstream game engines offer a plethora of customization options, certain developers may find themselves limited when it comes to controlling specific aspects of the game. Due to the lack of built‐in functionality in current game engines like Unity and Unreal, the author developed TRPGFramework, a lightweight framework based on Unity3D, to address some of these problems. The game framework consists of two main parts: ZGamework (overall framework) and BGamework (game‐specific framework). To enhance performance, scalability, and code reusability in the game development process, the entity‐component‐system structure is implemented. This approach increases maintainability and makes the code clearer, easier to expand, and debuggable. By creating a simple 2D RPG game for performance testing, we confirmed that the framework significantly improves code reusability and modularity, resulting in faster development time and increased efficiency for interactive applications and games. This framework is particularly useful for creating real‐time combat role‐playing games, which are some of the most complex games available today. Using entity‐component‐system principles, we developed a buff system and unit controller optimized to allow hundreds of intelligent units to fight on the same screen or thousands of non‐intelligent units to fight simultaneously.

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“…Intensive work is also being carried out in the maritime sector. Their results are described, among others, by the authors of papers [17][18][19][20][21][22][23][24][25][26][27][28][29][30]. Analyzing the cited studies from the field of shipbuilding, as in other industries, one can notice discrepancies in the unambiguous definition of DT as well as the idea of its use.…”

Section: Introductionmentioning

confidence: 99%

Digital Twin Of Shipbuilding Process in Shipyard 4.0

Iwańkowicz¹,

Rutkowski²

2023

Preprint

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Current trends in industrial development strive for maximum digitalization. The digital industrial revolution has been going on for more than a dozen years, Industry 4.0 and the idea of digital twins (DT) is becoming the focus of virtually all industrial sectors. Some sectors are more predisposed to digitalization, for others the process is much more difficult. This depends mainly on the specific characteristics and susceptibility of a given industry, including the current degree of digitalization of enterprises, as well as the knowledge and mental readiness of employees. The individual characteristics of an industry are important. Shipyards belong to the industry with a traditional approach, where the degree of digitalization remains low. As a result, the efficiency of shipbuilding processes and the quality of ships built are not sufficiently controlled. The article addresses this problem, reviews work in the field of digitalization of shipbuilding processes and points out the needs and challenges in this area. The article proposes the concept of a DT system for the entire ship design and production process. Key areas of digitalization of actual processes were defined, and a division was made into planning, monitoring and process analysis activities. Special attention was paid to the area of dimensional quality control and the Dimensional Quality Management Metasystem (DQMM) was featured in the comprehensive DT system. The requirements were defined and the limitations of the proposed solution were identified, taking into account a number of external factors including the degree of readiness of the manufacturer – the shipyard. The developed DT system concept was tested on the example of the construction process of a simplified ship. Practical aspects of the implementation of the proposed solution, in particular DQMM, were indicated.

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Co-simulation as a Fundamental Technology for Twin Ships

Cited by 23 publications

References 35 publications

A Comprehensive Review of Modeling and Optimization Methods for Ship Energy Systems

A Comprehensive Review of Modeling and Optimization Methods for Ship Energy Systems

An auxiliary development framework for lightweight RPG games based on Unity3D

Digital Twin Of Shipbuilding Process in Shipyard 4.0

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