http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
LNG 연료공급장치 적용을 위한 이중배관 시스템의 다물리 CAE 기반 설계 검증에 관한 연구
오재원(J.W. Oh),성기영(K.Y. Sung),이정희(J.H. Lee),배상은(S.E. Bae),조수길(S.G. Cho),김형우(H.W. Kim) 한국전산유체공학회 2019 한국전산유체공학회지 Vol.24 No.3
This study was carried out for design verification based on CAE of double piping system used in LNG fuel supply system. The double pipe is composed of an inner pipe through which LNG flows, an outer pipe through which air flows, and support for supporting between the inner pipe and the outer pipe. In order to apply the developed double piping system to the fuel supply system, it is necessary to secure air circulation characteristics, heat stability, structure stability, and vibration safety against gas leakage. Therefore, the verification of multiphysics research is required. The double piping used for LNG fuel supply system is an important equipment used in the engine room of LNG propulsion ships and safety design is very important because of the risk of secondary damage caused by LNG leakage. Therefore, in this study, multiphysics CAE technology is applied to review the safety while satisfying the design requirements of the developed double pipe. Considering the pressure loss of the fan, machine engine and pipeline, the predicted actual flow condition was predicted within the allowable flow range. In addition, the structural and dynamic stability analysis showed that the support operates in the safe area.
An Algorithm for Design Sensitivity Analysis of General Mechanical Systems
김동우(D. W. Kim),양성모(S. M. Yang),김형우(H. W. Kim),배대성(D. S. Bae) 한국자동차공학회 1999 한국 자동차공학회논문집 Vol.7 No.1
Design sensitivity analysis of a mechanical system is an essential tool for design optimization and trade-off studies. This paper presents an efficient algorithm for the design sensitivity analysis, using the direct differentiation method. The Cartesian coordinate is employed as the generalized coordinate. The governing equations of the design sensitivity analysis are formulated as the differential algebraic equations(DAE). The DAE problem is solved by the local parameterization method. A complicated vehicle system that consists of many different types of joints, bushings, and spring/dampers is analyzed to show the validity and the efficiency of the proposed method.<br/>