Numerical modeling of internal waves within a coupled analysis framework and their influence on spar platforms

Kurup, Nishu V.; Shi, Shan; Jiang, Lei; Kim, M.H.

doi:10.12989/ose.2015.5.4.261

Cited by 14 publications

(4 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…By incorporating all the components and functions described above the final form of the model is obtained for the first mode as (13) The velocities and accelerations are obtained by utilizing the continuity equation and the nonlinear kinematic boundary condition. [27] …”

Section: Analytical Modelmentioning

confidence: 99%

“…Previously published results for a production truss spar platform designed for the same field and same environmental conditions [13,29] are presented in this section for comparison purpose. The reader is referred to the original publications for the details of the analysis.…”

Section: Spar Production Systemmentioning

confidence: 99%

“…There have been several recent studies on the effects of these waves on various floating structures such as offshore drilling units [11], Spars [12][13][14], OTEC platforms [15], and FLNG offloading vessels. There have been several recent studies on the effects of these waves on various floating structures such as offshore drilling units [11], Spars [12][13][14], OTEC platforms [15], and FLNG offloading vessels.…”

Section: Introductionmentioning

confidence: 99%

“…There have been several recent studies on the effects of these waves on various floating structures such as offshore drilling units [11], Spars [12][13][14], OTEC platforms [15], and FLNG offloading vessels. [13] The formulation adopted in this paper models several crucial characteristics of solitary wave trains, including the addition of oscillations per Brunt-Vaisala period, and thus is quite useful for capturing the temporal effects of the waves on offshore platforms. Some results from a previously published study on Spar platforms designed for the similar field conditions are also discussed for comparison purposes.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Numerical Modeling of Internal Waves and their Influence on Deepwater Floating Systems

Kurup

Shi

Jiang

et al. 2016

Day 4 Thu, May 05, 2016

View full text Add to dashboard Cite

Internal waves occur due to a combination of density stratification, bathymetry, and tidal effects and have been observed in many parts of the world. Recent discoveries of oil and gas reserves in areas where these phenomena are prominent have caused concern for field development. There have been several incidents where adverse effects were reported due to the effect of these waves on offshore platforms. This paper studies the effects of these waves on tension leg platforms (TLPs) and semi-submersible platforms within a coupled analysis framework. The physics is modeled by the second order Korteweg-de Vries (KdV) equation obtained by simplification and scaling of the Boussinesq approximation. A solution involving Jacobian elliptic functions coupled with a structure function that captures the effect of the pycnocline is utilized to model the wave. The model is implemented in a coupled analysis framework, and time domain simulations are performed to study the effects on a TLP and Semi configured to the developmental requirements and environmental conditions of an internal wave prominent area. Previous results showing the effects of internal waves on Spar platforms are also presented for comparison purposes. Two different internal waves with heights of 90m and 170m are utilized for the study. The impact of these waves on platform motion, tendon and mooring line tension are presented in this paper.The study could provide guidance on platform selection in areas where the phenomenon is prominent. In addition the model adopted in this study has the advantage of capturing temporal effects of internal wave trains making it an effective model for advance warning systems with real time monitoring.

show abstract

Section: Analytical Modelmentioning

confidence: 99%

Section: Spar Production Systemmentioning

confidence: 99%

“…There have been several recent studies on the effects of these waves on various floating structures such as offshore drilling units [11], Spars [12][13][14], OTEC platforms [15], and FLNG offloading vessels. There have been several recent studies on the effects of these waves on various floating structures such as offshore drilling units [11], Spars [12][13][14], OTEC platforms [15], and FLNG offloading vessels.…”

Section: Introductionmentioning

confidence: 99%

“…There have been several recent studies on the effects of these waves on various floating structures such as offshore drilling units [11], Spars [12][13][14], OTEC platforms [15], and FLNG offloading vessels. [13] The formulation adopted in this paper models several crucial characteristics of solitary wave trains, including the addition of oscillations per Brunt-Vaisala period, and thus is quite useful for capturing the temporal effects of the waves on offshore platforms. Some results from a previously published study on Spar platforms designed for the similar field conditions are also discussed for comparison purposes.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations