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Volume 48(5); October 2024
Experimental study on hydrolysis of ureaโwater solution by compression pressure of diesel engines
Changchang Li, Jeongbin Lim, Dowoon Lee, Kyeongju Kong, Sukho Jung
Exhaust gases generated during combustion in diesel engines are harmful to the environment. Therefore, carbon-free fuels have attracted attention as alternative...
Simulation and analysis of a fuel supply system with vent control system for ammonia fueled ships
Seong-kyu Jeong, You-Taek Kim, Jun-Seong Kim
Process system modeling and dynamic simulation of the ammonia fuel supply system for a 320,000 dwt Very large crude carrier (VLCC) were conducted in this study....
Jong Hyun Park, Suhyeon Kim, Min-Gyu Jeon, Sung Hwan Yoon
Hydrocarbon-based fuels, such as propane (LPG), emit pollutants like soot during combustion, which negatively affect human health and the environment. Propane, ...
Kinetics Rate Characteristics of Reformate Gas in a Reformer for Hydrogen Production
Da-Hye Hwang, Yong-Seok Choi, Tae-Woo Lim
The mechanism of a waterโgas shift (WGS) reactor design was analyzed to produce hydrogen using part of the boil-off gas (BOG) generated from liquefied natural g...
Naima Issa Ahmed, Jeong Kuk Kim, Kang Woo Chun, Jae-Hyuk Choi, Won-Ju Lee
Owing to environmental considerations, there is an increased interest in the Maritime Industry in regulating sulfur oxide emissions and maintaining engine perfo...
Pass schedule design in multi-pass tube drawing process by advanced strain control model
Sung-Choel Park, Sung-Park Hong, Eun-Bin Seo, Kyung-Hun Lee
The multi-pass tube drawing process is primarily used to manufacture long hollow components during the metal forming process. The housing of the servomotor is a...
Yeseul Na, Sanjaya Kumar Pradhan, Je-shin Park, Min-Suk Oh
In this study, we investigated the corrosion behaviors of Zn, Zn-Mg-Al, and Al-Si alloy coatings in a simulated marine environment. Through a combination of ele...
Sung-Kyu Hong, Jae-Han Son, Ha-Eun Cheon, Su-Min Pyo, Kyung-Hun Lee
We conducted finite element (FE) analysis to develop a rotary swaging process to form the pointing part of hydrogen embrittlement-resistant steel rods. First, t...
Analysis of sprinkler performance in a methanol pool fire using computational fluid dynamics
Sang-Jin Lim, Yoon-Ho Lee
The pool fire process and sprinkler action against fires caused by liquid methanol leaks in the fuel preparation room of the ship was simulated using Pyrosim so...
Research for implementation of PANS model based on open source code
Gisu Song, Sungwook Lee
Several Hybrid RANS/LES methods which combine advantages of RANS and LES(or DNS) has been proposed. These methods can be very practical for real engineering pro...
Kinematic manipulation of a large object using a leaderโassistant mobile robot system
Hao Tian, Jin-Kyu Choi, Heon-Hui Kim
This study investigated the transportation of large objects using multiple mobile robots. The transport strategy entails three phases: first, the robots couple ...
Jong-Eon Park, Jaeyul Choo
This paper presents the electromagnetic scattering characteristics of an open nuclear power plant (NPP) cabinet at application frequencies of 2.4 and 5 GHz when...
Whitecap detection analysis using instance segmentation models
Min-Seo Kim, Ju-Hyeon Seong
In the ocean, whitecaps resulting from various factors such as wind and ships induce considerable disturbances in image-based object detection and recognition m...
Pil Woo Heo
In this study, manufactured exhaled gas was mixed with water using a hollow fiber membrane, and the possibility of underwater breathing using the separated gase...
MASS engine room FMEA using evidential reasoning method
Hyejin Choi, Kanghyun Seo, Ji-Woong Lee, Jae-ung Lee
Failure mode and effects analysis (FMEA) has been widely applied across various industries because of its ability to identify potential risk factors and calcula...
Implementation of knowledge management to support design tasks of large-scale complex system
SeungMin Lee, YunHui Kim, JunSeok Oh, ChangSoo Ha
A large-scale complex system (LSCS) is an engineering product comprising of numerous components and interconnected subsystems. The LSCS is required to change it...
Development of design configuration management system for large-scale complex system (LaDCoM)
SeungMin Lee, YunHui Kim, JunSeok Oh, ChangSoo Ha
A large-scale complex system (LSCS) is an engineering product characterized by numerous components and a structure of interconnected subsystems. The constructio...