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Fundamental green water study for head, beam and quartering seas for a simplified FPSO geosim using a mixed experimental and numerical approach

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Abstract

The prediction of green water events on FPSO is very important from both the design and operational point of view, requiring the development of a specific methodology regarding the problem. The computation of the loads on structures located on the main deck in the design stage is important to define reinforcements in the equipments to avoid damages. Besides, the freeboard prediction is important to define the operational windows and limit conditions since the deck activities should be interrupted if there is a risk of overtopping. Since it is unfeasible to perform an extensive experimental campaign regarding all the sea states verified in the operational site, the use of numerical methods is often considered. In order to verify the accuracy of the numerical results, an experimental campaign is performed regarding a simplified FPSO geometry and the results are compared with both BEM and FVM computations to validate the numerical results. This article compares the results regarding the captive model test (i.e., body motions are absent) which will be complemented in a next article regarding the floating body in waves.

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Notes

  1. Floating production storage and offloading.

  2. Single Point Mooring.

  3. Finite volume methods.

  4. Keulegan carpenter.

  5. Volume of fluid.

  6. Actually a symmetry condition is imposed in the symmetry plane, which is basically the same as free slip wall condition.

  7. Since the mesh is built as multiblock, the base size parameter can be used to verify mesh convergence after a refinement block distribution is defined.

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Acknowledgments

The authors would like to thank Petrobras for the support provided during this research.

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Authors and Affiliations

  1. Department of Naval Architecture and Ocean Engineering, University of São Paulo, São Paulo, Brazil

    Felipe Ruggeri, Rafael A. Watai, Pedro Cardozo de Mello, Claudio Mueller P. Sampaio & Alexandre N. Simos

  2. CENPES - Petrobrás S.A., Rio de Janeiro, Brazil

    Daniel Fonseca de Carvalho e Silva

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  1. Felipe Ruggeri
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  2. Rafael A. Watai
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  3. Pedro Cardozo de Mello
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  4. Claudio Mueller P. Sampaio
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  5. Alexandre N. Simos
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  6. Daniel Fonseca de Carvalho e Silva
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Correspondence to Felipe Ruggeri.

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Ruggeri, F., Watai, R.A., de Mello, P.C. et al. Fundamental green water study for head, beam and quartering seas for a simplified FPSO geosim using a mixed experimental and numerical approach. Mar Syst Ocean Technol 10, 71–90 (2015). https://doi.org/10.1007/s40868-015-0007-2

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  • DOI: https://doi.org/10.1007/s40868-015-0007-2

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