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Parametric study of a new HOS-CFD coupling method

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Abstract

This paper presents a developed new coupled method which combined our in-house CFD solver naoe-FOAM-SJTU and naoe-FOAM-os with a potential theory High Order Spectral method (HOS). A parametric study of nonlinear wave propagation in computational fluid dynamics (CFD) zone is considered. Mesh convergence, time step convergence, time discretization scheme and length of relaxation zone are all carried out. Those parametric studies verify the steady of this new combined method and give better choice for wave propagation. The dissipation in propagation of nonlinear regular wave can be lower than 3% in static mesh, and less than 2% in overset grid mesh. Meanwhile, a LNG FPSO is put into the viscous wave tank to study the suitable size of CFD zone. To achieve a better solution with least calculating resources and best numerical results, the length of CFD zone is discussed. These parametric studies can give reference upon employment of the potential-viscous coupled method and validation of the coupled method.

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Acknowledgements

This work was supported by the Chang Jiang Scholars Program (Grant No. T2014099), the Innovative Special Project of Numerical Tank of Ministry of Industry and Information Technology of China (Grant No. 2016-23/09).

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Authors and Affiliations

  1. Computational Marine Hydrodynamics Lab (CMHL), School of Naval Architecture, Ocean and Civil Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China

    Yuan Zhuang & De-cheng Wan

Authors
  1. Yuan Zhuang
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  2. De-cheng Wan
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Corresponding author

Correspondence to De-cheng Wan.

Additional information

Project supported by the National Natural Science Foundation of China (Grant Nos. 51879159, 51809169 and 51909160), the National Key Research and Development Program of China (Grant Nos. 2019YFB1704200, 2019YFC0312400).

Biography

Yuan Zhuang (1993-), Female, Ph. D. Candidate, E-mail: nana2_0@sjtu.edu.cn

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Zhuang, Y., Wan, Dc. Parametric study of a new HOS-CFD coupling method. J Hydrodyn 33, 43–54 (2021). https://doi.org/10.1007/s42241-021-0012-1

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  • DOI: https://doi.org/10.1007/s42241-021-0012-1

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