Risers are fluid conduits from subsea equipment to surface floating production platforms. The integrity of a riser system plays a very important role in deepwater developments. A top-tensioned riser generally consists of outer casing, inner casing and tubing. The pipes are coupled either through fluids in the annuli or through intermediate guides (centralizers) or through both. This paper investigates the dynamic analysis for such an internally coupled fluid/ riser system. This paper first presents a theoretical formulation for a general riser system coupled with fluids in the annuli and centralizers between pipes. Hydrodynamic forces associated with the viscous fluid in between concentric cylinders are considered. An effective dynamic stiffness matrix method is then developed to evaluate the added mass and damping influence of the fluid on the natural frequencies and the dynamic response of the coupled riser system. A riser example is used to illustrate the fluid coupling impact on the system’s dynamic performance. The coupling through the fluid and centralizers can be optimally designed such that an inner pipe acts as a vibration absorber to the outer casing.
Skip Nav Destination
ASME 2010 29th International Conference on Ocean, Offshore and Arctic Engineering
June 6–11, 2010
Shanghai, China
Conference Sponsors:
- Ocean, Offshore and Arctic Engineering Division
ISBN:
978-0-7918-4913-2
PROCEEDINGS PAPER
Dynamic Analysis for an Internally Coupled Fluid/Riser System
J. Kim Vandiver
J. Kim Vandiver
Massachusetts Institute of Technology, Cambridge, MA
Search for other works by this author on:
Yongming Cheng
Technip, Houston, TX
J. Kim Vandiver
Massachusetts Institute of Technology, Cambridge, MA
Paper No:
OMAE2010-20193, pp. 257-267; 11 pages
Published Online:
December 22, 2010
Citation
Cheng, Y, & Vandiver, JK. "Dynamic Analysis for an Internally Coupled Fluid/Riser System." Proceedings of the ASME 2010 29th International Conference on Ocean, Offshore and Arctic Engineering. 29th International Conference on Ocean, Offshore and Arctic Engineering: Volume 5, Parts A and B. Shanghai, China. June 6–11, 2010. pp. 257-267. ASME. https://doi.org/10.1115/OMAE2010-20193
Download citation file:
12
Views
Related Proceedings Papers
Related Articles
Dynamic Response of Risers Conveying Fluid
J. Offshore Mech. Arct. Eng (August,2000)
Linear and Nonlinear Approach of Hydropneumatic Tensioner Modeling for Spar Global Performance
J. Offshore Mech. Arct. Eng (February,2010)
Fluids Transport Optimization Using Seabed Separation
J. Energy Resour. Technol (September,2000)
Related Chapters
Contact (Joint) Stiffness and Damping
Handbook on Stiffness & Damping in Mechanical Design
Production Riser Life Extension – A Class Perspective
Ageing and Life Extension of Offshore Facilities
Historical Overview
History of Line Pipe Manufacturing in North America