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조선해양 생산 시뮬레이션 후처리를 위한 3D 가시화 커널의 설계
이효광(Hyokwang Lee),황호진(Ho-Jin Hwang),황진상(Jinsang Hwang) (사)한국CDE학회 2012 한국 CAD/CAM 학회 학술발표회 논문집 Vol.2012 No.2
We propose a design of 3D visualization kernel for post-processing of shipbuilding simulations based on ship production simulation framework. The simulation framework is composed of a number of simulation kernels and visualization functions. Simulation applications are built from integration of simulation kernels with 3D visualization functions which plays the role of post-processing of simulation s done by the simulation kernels. To help developers of simulation applications make an efficient and consistent use of 3D visualization functions, we suggest a design of 3D visualization kernel which provides the visualization functions. First, we set up a list of visualization requirements for 3D visualization kernel. After that, we compare severer commercial and free graphics engines and toolkits together on the requirements in the list. Then, we explain how to design and implement interfaces for geometry handling, scene graph management, animation, and collision detection based on HOOPS 3DF graphics engine. Through this approach, a reduction of the development time and resource to be spent on integrating visualization functions into simulation applications is expected.
이진행,조영갑,이효광,박창규,오종명,유연식,원민구,허형 한국원자력학회 2023 Nuclear Engineering and Technology Vol.55 No.12
Fuel locking mechanisms (FLMs) are essential in upward-flow research reactors to prevent accidental fuel separation from the core during reactor operation. This study presents a novel design concept for a remotely controlled plate-type nuclear fuel locking mechanism. By employing electromagnetic field analysis, we optimized the design of the electromagnet for fuel unlocking, allowing the FLM to adapt to various research reactor core designs, minimizing installation space, and reducing maintenance efforts. Computational flow analysis quantified the drag acting on the fuel assembly caused by coolant upflow. Subsequently, we performed finite element analysis and evaluated the structural integrity of the FLM based on the ASME boiler and pressure vessel (B&PV) code, considering design loads such as dead weight and flow drag. Our findings confirm that the new FLM design provides sufficient margins to withstand the specified loads. We fabricated a prototype comprising the driving part, a simplified moving part, and a dummy fuel assembly. Through basic operational tests on the assembled components, we verified that the manufactured products meet the performance requirements. This remote-controlled micro locking mechanism holds promise in enhancing the safety and efficiency of plate-type nuclear fuel operation in upflow research reactors.
DEVS 기반 모델링을 적용한 잠수함의 어뢰회피 성능 분석 시뮬레이션
강정호,이성준,차주환,유성진,이효광,이규열,김태완,고용석,Kang Jung-Ho,Lee Sung-Jun,Cha Ju-Hwan,Yoo Seong-Jin,Lee Hyo-Kwang,Lee Kyu-Yeul,Kim Tae-Wan,Ko Yong-Seog 한국시뮬레이션학회 2005 한국시뮬레이션학회 논문지 Vol.14 No.2
A simulation for the analysis of the evasive capability of a conventional costal submarine against a light Anti-Submarine Warfare (ASW) torpedo has been studied. The Torpedo, Submarine Controller, Devoy, and Jammer models of this simulation are analysised and designed using Unified Modeling Language (UML) and in addition they are modeled Discrete Event System Specification (DEVS). We examine maximum speed, acceleration, countermeasure systems capabilities of a submarine, and sonar range of a torpedo as the factors which affect the evasive capability of the submarine. This paper shows the relationships between those various factors and the submarine's evasive capability as the outcome of the simulation. The simulation models can be applied for simulation based acquisition (SBA) of a submarine system.