The hydraulic equipments use the hydraulic pressure by the control of valve. Most of hydraulic equipments are controlled to be activated in accordance with the proper pressure. In the case of the safety valve, when it is applied over the specific pressure number, the valve is drained to secure the safety of the system. These safety valves are activated according to the current pressure. In this study, prior to the analysis of the main control valve, the computational fluid dynamics are performed for the system in which the valve is opened or closed depending on the using pressure. The using pressure is randomly set and programmed in the scheme language. From the results of simulation, we can see that the boundary condition is changed at the using pressure. Using this simulation technique, we can automatically change the boundary condition when the pressure reaches the specific value. So, we suggested a solution of the problem of the override characteristics.
목차
Abstract 1. 서론 2. 경계조건 변경 프로세스 설계 2.1 유로형상 3D 모델링 2.2 유로 해석 모델 생성 2.3 Define Boundary Condition 2.4 Scheme Programming 2.5 CFD를 통한 해석 3. 해석결과 및 분석 4. 결론 후기 References