수치해석적 방법을 통한 해양심층수 취수용 유연 라이저의 거동 해석에 관한 연구

• Published in: Han-guk haeyang gonghak hoeji (Online) Vol. 18; no. 4; pp. 15 - 22
• Main Authors: 정동호(DONG-HO JUNG), 김현주(HYEON-JU KIM), 박한일(HAN-IL PARK)
• Format: Journal Article
• Language: Korean
• Published: 한국해양공학회 2004
• Subjects: Flexible Riser 유연라이저; Deep Ocean Water 해양심층수; Intake Depth 취수수심; Static and Dynamic Analysis 정적 및 동적 해석; Finite Difference Method 유한차분법
• ISSN: 1225-0767; 2287-6715

Static and dynamic analyses of a very flexible and light riser, for upwelling the deep ocean water, is performed. In this numerical study, an implicit finite difference algorithm is employed for three-dimensional riser equations. Fluid non-linearity and bending stiffness are considered and solved, using the Newton-Raphson iteration. Maintaining the depth of end point of a flexible and light riser is very important for upwelling deep ocean water in a floating type development system. Weight is attached at the end point of the riser in order to maintain its intake depth. It is designed under the strong surface current and the configuration of the rise is predicted. In the dynamic analysis, the tension variation at the top point of the riser is presented. T e results of this study can contribute to the design of the development system in floating type for upwelling deep ocean water.