Automated topology design to improve the susceptibility of naval ships using geometric deep learning
Abstract The survivability of a naval ship is defined as its ability to evade or withstand a hostile environment while performing a given mission. Stealth technology, which reduces the probability of detection by enemy detection equipment using a highly advanced detection system, is one of the most important technologies to improve the survivability of naval […]
Process design of advanced LNG subcooling system combined with a mixed refrigerant cycle
Abstract LNG subcooling system is a conventional system to keep the pressure of an LNG storage tank for LNG carriers, but has a weak point of the low efficiency resulting in a new BOG reliquefaction system. This study suggests a new LNG subcooling system combined with mixed refrigerant cycle (MR-SLNG), which can increase efficiency significantly. […]
Performance analysis of a boil-off gas re-liquefaction process for LNG carriers
Abstract With the growth of LNG demand and rapid rise in natural gas prices, it is of great significance to develop an efficient boil-off gas (BOG) re-liquefaction process for LNG carriers. This paper proposes a BOG re-liquefaction process using the single mixed refrigerant (SMR) cycle, and comprehensively compares it with the typical Mark III process. […]
Assessment of percent-time-operable of surface combatants with conventional and wave-piercing hulls
Abstract The present study concerns assessing and comparing the operability of two surface combatants with conventional and modern wave-piercing hulls. The operability is measured in terms of the percent-time-operable (PTO), based on the capability of missions in the annual operating condition by seakeeping analysis. The seakeeping criteria of the surface combatant in various missions are […]
Method for Pipe Routing Using the Expert System and the Heuristic Pathfinding Algorithm in Shipbuilding
Abstract Pipe routing during the design process of a ship depends on the design experience or knowledge of experts. In this study, an expert system that can systematize expert knowledge was constructed to enhance the design of a ship's pipe routing, which relies on experts. In addition, a method for pipe routing using a pathfinding […]
Data Association for Autonomous Ships Based on the Virtual Simulation Environment
Abstract Ships obtain information regarding their surroundings using various types of sensors such as automatic identification systems (AISs), radio detection and ranging (RADAR), and cameras. Each sensor data point includes different information and exhibits different characteristics, and the measurement data generated from a single target must be associated to increase the recognition accuracy and tracking […]
Numerical analysis of a highly efficient cascade solid oxide fuel cell system with a fuel regenerator
Abstract One of the most effective ways to improve the electrical efficiency of a solid oxide fuel cell system is to maximize the fuel utilization of the system. As a method to increase fuel utilization, the anode off-gas from the first stack is supplied to the second stack. Because low fuel concentrations in the first […]
Techno-economic evaluation of green hydrogen production with low-temperature water electrolysis technologies directly coupled with renewable power sources
Abstract It is obvious that green hydrogen production needs to increase to solve climate change issues, but green hydrogen has not been actively produced due to economic disadvantages. In order to secure the economic feasibility of green hydrogen production, it is necessary to find the optimal combination of renewable power sources and water electrolysis types. […]
Energetic, exergetic, economic, and exergoeconomic analysis of a phosphoric acid fuel cell-organic rankine cycle hybrid system
Abstract A phosphoric acid fuel cell-organic Rankine cycle (PAFC-ORC) hybrid system is proposed to maximize the electrical efficiency of the PAFC system. The exhaust heat from the PAFC is used to heat working fluids flowing through the ORC to generate additional power. To optimize the system, a numerical model of the PAFC system was developed […]
Next-Generation Robot Perception: Hierarchical Representations, Certifiable Algorithms, and Self-Supervised Learning
실시간 YouTube link: https://youtu.be/ONMPISlobyg
