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Publications
Rodrigues, M.I., Wang, S. and Guedes Soares, C. (2024), Uncertainty assessment for linear transfer functions from different numerical methods, Advances in Maritime Technology and Engineering, Guedes Soares, C. & Santos T.A. (Eds.), Taylor and Francis, London, UK, pp. 227-237.
The present research focuses on assessing the uncertainties associated with seakeeping codes used to predict rigid-body responses of two different ship types, a liquified natural gas carrier and a chemical tanker. The accuracy of the calculated linear transfer functions, derived from numerical methods based on potential flow theory, is rigorously verified through comparisons with corresponding experimental benchmark studies. For the seakeeping analysis, two groups of numerical tools are employed, namely the Strip Theory Method and 3D Panel Methods. Short-term statistical models such as Frequency Independent Model Error, Coefficient of Determination, and Total Difference Approaches are used to quantify and assess the uncertainties in predictions. These measures are compared across various code-based responses for each ship and across the different ship types when experiencing the same response. The research concludes with an evaluation and discussion of the precision of all numerical solutions.
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