Large amplitude motions of deepwater marine riser transporting fluid

Conference proceedings article

ผู้เขียน/บรรณาธิการ

กลุ่มสาขาการวิจัยเชิงกลยุทธ์

ไม่พบข้อมูลที่เกี่ยวข้อง

รายละเอียดสำหรับงานพิมพ์

รายชื่อผู้แต่ง: Klaycham K., Athisakul C., Chucheepsakul S.

ผู้เผยแพร่: International Society of Offshore and Polar Engineers

ปีที่เผยแพร่ (ค.ศ.): 2018

Volume number: 2018-June

หน้าแรก: 78

หน้าสุดท้าย: 85

จำนวนหน้า: 8

ISBN: 9781880653876

นอก: 1098-6189

eISSN: 1098-6189

URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85053449824&partnerID=40&md5=bab5741b5360023a5b14eb8d52dc65ab

ภาษา: English-Great Britain (EN-GB)

บทคัดย่อ

This paper presents a variational model of a deepwater marine riser transporting fluid capable of analyzing large amplitude motions. The riser model is formulated based on the virtual work-energy principle. The geometric nonlinearity is considered, which accounts for axial stretching and the deformed curvature of the riser. The finite element method is used to solve the numerical solution. The nonlinear stiffness matrices up to second order of riser displacements are kept in the equation of motion. The hydrodynamic force written in term of squared riser velocity also yields the nonlinear damping matrix. The inertial force induced by an unsteady flow of transported fluid is taken into consideration. Performing the Newmark time integration incorporated direct iteration on the equation of motion provides the nonlinear vibration response. For the parametric studies, the effect of forcing frequencies of hydrodynamic wave and internal pulsatile flow on the dynamic responses are highlighted. The special attentions are paid to the effect of nonlinear geometry on vibration amplitude of the riser. Copyright ฉ 2018 by the International Society of Offshore and Polar Engineers (ISOPE)

คำสำคัญ

Internal pulsatile flow, Large amplitude motion, Nonlinear geometry, Nonlinear vibration