해저 점퍼 내 슬러그를 동반하는 다상유동에 대한 유체-구조 연성 해석 모델 연구

초록

FIV(Flow-induced vibration) and SIV(Slug-induced vibration) are one of reasons for failure of subsea jumper mostly transporting multi-phase flow. Both FIV and SIV cause fluctuating hydrodynamic pressure acting on the pipe wall which leads to dynamic response of pipe having excessive stress and displacement from its original position. This paper consists of two main parts; Conducting one-way FSI between jumper and internal multi-phase flow with slugging, and conducting parametric study for varying geometrical and flow parameters to observe the tendency of flow pattern and corresponding dynamic pressure on the pipe wall. In order to conduct FSI, numerical analysis procedure is described in detail based on the variables to be considered at each step of setting the model. Assumption and method to input values are discussed.