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통합환경 CAE 소프트웨어 STAR-CCM+ 소개 및 설비 분야 적용 사례
진봉용 대한설비공학회 2014 설비저널 Vol.43 No.9
전처리, 솔버 및 후처리 과정이 하나의 프레임에서 통합하여 운영되는 범용 CAE 3차원 해석 툴인 STARCCM+의 기본적인 기능과 이를 활용한 설비 분야의 다양한 적용 사례에 대해 소개하고자 한다.
[연료 및 윤활유부문] 3차원 유동해석을 통한 차량 소음기의 소음예측
진봉용(Bong-Yong Jin),이상호(Sang-Ho Lee),이병직(Byung-Jik Lee),조남효(Nam-Hyo Cho) 한국자동차공학회 2000 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
Numerical analysis with Computational Fluid Dynamics (CFD) was carried out to investigate exhaust gas flow and acoustic characteristics in the exhaust system of a passenger car. Transient 3-dimensional flow field in the front and rear mufflers was simulated by CFD and far-field sound pressure was modeled by a simple monopole source method. Engine performance simulation was also performed to obtain the boundary condition of instantaneous pressure variation at the system inlet. Detailed exhaust gas flow characteristics such as velocity and pressure distribution inside the mufflers were presented. Especially pulsating pressure amplitude was compared at several locations in the front and rear mufflers to deduce sound pressure level. The present method of acoustic analysis coupled with CFD modeling would be very effective for the prediction of sound noise in the exhaust system
[가솔린엔진부문] 촉매변환기내 유동분포 개선을 위한 형상 최적화
진봉용(Bong-Yong Jin),백경욱(Kyung-Wook Baek),조남효(Nam-Hyo Cho) 한국자동차공학회 1999 한국자동차공학회 춘 추계 학술대회 논문집 Vol.1999 No.11_1
Performance improvement and longer service life of automotive catalytic convener can be achieved by improving the flow distribution of exhaust gas through a catalytic convener. Several design parameters which include the geometry of diffuser inlet and inlet diffuser, relative position of inlet pipe and monolith centers were investigated against their effects on flow uniformity in the convener. The flow distribution was improved by the geometry optimization of exhaust system under limited conditions.
이상혁,허남건,진봉용 한국유체기계학회 2007 한국유체기계학회 논문집 Vol.10 No.1
In this study, the characteristic of a vane pump of automotive power steering system is numerically analyzed. The vane pump changes the energy level of operation fluid by converting mechanical input power to hydraulic output. To simulate this mechanism, moving mesh technique is adopted. As a result, the flow rate and pressure are obtained by numerical analysis. The flow rate agrees well with the experimental data. Moreover, the variation and oscillation of the pressure around the rotating vane are observed. As a result of flow characteristics, The difference of pressure between both side of vane tip causes the back flow into the rotor. As the rotational velocity increases, the flow rate at the outlet and the pressure in the vane tip rises with higher amplitude of oscillation. In order to reducing the oscillation, the design of devices for decreasing the cross-area of the outlet part and returning the flow from the outlet to the inlet is required.1. 서 론* 서강대학교 기계공학과 대학원