심해저 바이패스 밸브의 기하학적 형상과 제어조건에 따른 유동특성에 관한 수치해석적 연구

다국어 초록 (Multilingual Abstract)

The present study has been carried out to analyze the flow characteristics with geometric shape and control conditions in subsea by-pass valve. The function of by-pass valve is to prevent reverse flow. In this study, the static analysis has been perform for analyzing fluid flow in open state. In order to consider the turbulent effect, the standard k-ε model was used. A variety of parametric studies, such as by-pass valve type or size, volume flow rate, leakage hole size, leakage hole position, block type, block shape, were performed. The pressure difference across the valve in the model broadened the flow channel cross-sectional area was greater than the base model for the same operating conditions. As the pipe diameter in the block decreases the pressure difference is greatly increased. The pressure difference according to block shape such as edge type and round was almost negligible. For the same Reynolds number the pressure difference was little changed according to the size of the valve.

참고문헌 (Reference)

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2 Lee, J.H., "Numerical Analysis For FLow Characteristics of By-pass Valve eith Geometric Shape and Control Conditions" 148-149, 2016

3 Xu, H., "Hydrodynamic Characterization and Optimization of Contra-push Check Valve by Numerical Simulation" 38 : 1427-1437, 2011

4 Turesson, M., "Dynamic simulation of check valve using CFD and evaluation of check valve model in RELAP5" Chalmers University of Technology 2011

5 Cho, A.T., "Analysis of Flow Through High Pressure By-pass Valve in Power Plant" Inha University 2008