Abstract
In this study, numerical simulations for the prediction of ship motions and added resistance of a high-speed trimaran equipped with and without T-foil and stern flap for various wave conditions in regular head and oblique waves were investigated by means of unsteady Reynolds-averaged Navier–Stokes (RANS) method. The numerical methods used in the CFD approach were presented. Grid convergence tests were conducted to determine an optimal mesh system for the calculations of motions and added resistance of the trimaran in both head and oblique waves. Numerical simulations were performed to predict added resistance and ship motions of the trimaran vehicle, and the nonlinearity of the forces and moments acting on the trimaran was investigated. Unsteady wave patterns and time histories of the added resistance and ship motions were simulated and analyzed. The relationship between the added resistance and vertical ship motions was studied in detail, and the nonlinearity of the added resistance and ship motions with varying wave steepness was investigated. The influence of the T-foil on seakeeping performance of the trimaran was investigated, and the effect of various wave steepnesses on ship motions of the trimaran and the forces acting on the T-foil was analyzed.
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Acknowledgements
The paper was supported by the National Natural Science Foundation of China (Grant No. 51979157) and the Natural Science Foundation of Shanghai, China (Grant No. 19ZR1422500).
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Li, Y., Li, A., Gong, J. et al. Numerical investigation on added resistance and motions of a high-speed trimaran equipped with T-foil and stern flap in regular head and oblique waves for varying wave steepness. J Braz. Soc. Mech. Sci. Eng. 43, 451 (2021). https://doi.org/10.1007/s40430-021-03177-0
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DOI: https://doi.org/10.1007/s40430-021-03177-0