Dynamic Analysis for an Internally Coupled Fluid/Riser System
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 flu...
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| Format: | Article |
| Language: | en_US |
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American Society of Mechanical Engineers
2017
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| Online Access: | http://hdl.handle.net/1721.1/109298 https://orcid.org/0000-0002-6144-660X |
| _version_ | 1826196951522082816 |
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| author | Cheng, Yongming Vandiver, John Kim |
| author2 | Massachusetts Institute of Technology. Department of Mechanical Engineering |
| author_facet | Massachusetts Institute of Technology. Department of Mechanical Engineering Cheng, Yongming Vandiver, John Kim |
| author_sort | Cheng, Yongming |
| collection | MIT |
| description | 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. |
| first_indexed | 2024-09-23T10:40:28Z |
| format | Article |
| id | mit-1721.1/109298 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T10:40:28Z |
| publishDate | 2017 |
| publisher | American Society of Mechanical Engineers |
| record_format | dspace |
| spelling | mit-1721.1/1092982022-09-30T22:11:14Z Dynamic Analysis for an Internally Coupled Fluid/Riser System Cheng, Yongming Vandiver, John Kim Massachusetts Institute of Technology. Department of Mechanical Engineering Massachusetts Institute of Technology. Department of Ocean Engineering Cheng, Yongming Vandiver, John Kim 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. SHEAR7 JIP 2017-05-23T15:42:09Z 2017-05-23T15:42:09Z 2010-06 Article http://purl.org/eprint/type/ConferencePaper 978-0-7918-4913-2 http://hdl.handle.net/1721.1/109298 Cheng, Yongming, and J. Kim Vandiver. “Dynamic Analysis for an Internally Coupled Fluid/Riser System.” 29th International Conference on Ocean, Offshore and Arctic Engineering: Volume 5, Parts A and B (2010). https://orcid.org/0000-0002-6144-660X en_US http://dx.doi.org/10.1115/OMAE2010-20193 29th International Conference on Ocean, Offshore and Arctic Engineering: Volume 5, Parts A and B Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. application/pdf American Society of Mechanical Engineers American Society of Mechanical Engineers (ASME) |
| spellingShingle | Cheng, Yongming Vandiver, John Kim Dynamic Analysis for an Internally Coupled Fluid/Riser System |
| title | Dynamic Analysis for an Internally Coupled Fluid/Riser System |
| title_full | Dynamic Analysis for an Internally Coupled Fluid/Riser System |
| title_fullStr | Dynamic Analysis for an Internally Coupled Fluid/Riser System |
| title_full_unstemmed | Dynamic Analysis for an Internally Coupled Fluid/Riser System |
| title_short | Dynamic Analysis for an Internally Coupled Fluid/Riser System |
| title_sort | dynamic analysis for an internally coupled fluid riser system |
| url | http://hdl.handle.net/1721.1/109298 https://orcid.org/0000-0002-6144-660X |
| work_keys_str_mv | AT chengyongming dynamicanalysisforaninternallycoupledfluidrisersystem AT vandiverjohnkim dynamicanalysisforaninternallycoupledfluidrisersystem |