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Numerical model for analysis of offshore structures subjected to pool fires

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Abstract

This paper introduces a numerical model to assess the thermomechanical behavior of offshore structures subjected to pool fires. The aim of this model is to improve the representation of fires in comparison with other existing models (e.g., nominal fire curves or zone modeling). The method proposed combines two-zone model—2ZM and a modified solid flame model—MSFM for calculating the convection and radiation portions of the heat transfer process between the fire and the structure. Thermal and mechanical analyses are performed sequentially using the commercial Finite Element Analysis software ABAQUS®. To assess the structure’s behavior , the transient temperature field resulting from the preceding thermal analysis is used together with pre-existing operating loads for the mechanical analysis. A pool fire in a tank barge is presented as a case study. Comparison of temperature and strain fields obtained with the method proposed to the results of other methods for assessment of the casualty indicates that the new model allows more realistic estimation of the temperature fields produced by the fire with relatively low computational costs.

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Acknowledgments

The authors wish to express their gratitude to the National Petroleum Agency of Brazil (ANP) and National Council of Scientific and Technological Development of Brazil (CNPq) for their support for the development of this work.

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Authors and Affiliations

  1. Ocean Engineering Program, COPPE/Federal University of Rio de Janeiro, Rio de Janeiro, Brazil

    Miguel R. Manco, Murilo A. Vaz & Julio C. R. Cyrino

  2. Civil Engineering Program, COPPE/Federal University of Rio de Janeiro, Rio de Janeiro, Brazil

    Alexandre Landesmann

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  1. Miguel R. Manco
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  2. Alexandre Landesmann
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  3. Murilo A. Vaz
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  4. Julio C. R. Cyrino
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Correspondence to Miguel R. Manco.

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Manco, M.R., Landesmann, A., Vaz, M.A. et al. Numerical model for analysis of offshore structures subjected to pool fires. Mar Syst Ocean Technol 11, 19–29 (2016). https://doi.org/10.1007/s40868-016-0014-y

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  • DOI: https://doi.org/10.1007/s40868-016-0014-y

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