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Chimera 격자기법을 이용한 자동차 주위의 유동장 해석
안민기,박원규,An, Min-Gi,Park, Won-Gyu 한국전산유체공학회 1998 한국전산유체공학회지 Vol.3 No.2
This paper describes the analysis of flow field around an automobile. The governing equations of the 3-D unsteady incompressible Navier-Stokes equations are solved by the iterative time marching scheme. The Chimera grid technique has been applied to efficiently simulate the flow around the side-view mirror. To validate the capability of simulating the flow around a ground vehicle, the flows around the Ahmed body with 12.5$^{\circ}$ and 30$^{\circ}$ of slant angles are simulated and good agreements with experiment and other numerical results are achieved. To validate Chimera grid technique, the flow field around a cylinder was also calculated. The computed results are also well agreed with other numerical results and experiment. After code validations, the flow phenomena around the ground vehicle are evidently shown. The flow around the side-view mirror is also well simulated using the Chimera grid technique.
금속 나노 파티클의 레이저 플라즈모닉 어닐링을 통한 메탈메쉬 전극 형성과 이를 활용한 유연 터치 센서
정성민 ( Seongmin Jeong ),황윤식 ( Yun Sik Hwang ),우유미 ( Yu Mi Woo ),조용준 ( Yong Jun Cho ),김찬혁 ( Chan Hyeok Kim ),안민기 ( Min Gi An ),서호석 ( Ho Seok Seo ),양찬현 ( Chan Hyeon Yang ),박귀일 ( Kwi-il Park ),박정환 ( Jung 한국전기전자재료학회 2024 전기전자재료학회논문지 Vol.37 No.2
Laser-induced plasmonic sintering of metal nanoparticles (NPs) holds significant promise as a technology for producing flexible conducting electrodes. This method offers immediate, straightforward, and scalable manufacturing approaches, eliminating the need for expensive facilities and intricate processes. Nevertheless, the metal NPs come at a high cost due to the intricate synthesis procedures required to ensure long-term reliability in terms of chemical stability and the prevention of NP aggregation. Herein, we induced the self-generation of metal nanoparticles from Ag organometallic ink, and fabricated highly conductive electrodes on flexible substrates through laser-assisted plasmonic annealing. To demonstrate the practicality of the fabricated flexible electrode, it was configured in a mesh pattern, realizing multi-touchable flexible touch screen panel.