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Two-dimensional numerical simulation and experiment on strongly nonlinear wave–body interactions

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Abstract

A constrained interpolation profile (CIP)-based Cartesian grid method for strongly nonlinear wave–body interaction problems is presented and validated by a newly designed experiment, which is performed in a two-dimensional wave channel. In the experiment, a floating body that has a rectangular section shape is used. A superstructure is installed on the deck and a small floating-body freeboard is adopted in order to easily obtain water-on-deck phenomena. A forced oscillation test in heave and a wave–body interaction test are carried out. The numerical simulation is performed by the CIP-based Cartesian grid method, which is described in this paper. The CIP scheme is applied in the Cartesian grid-based flow solver. New improvements of the method include an interface-capturing method that applies the tangent of hyperbola for interface capturing (THINC) scheme and a virtual particle method for the floating body. The efficiency of the THINC scheme is shown by a dam-breaking computation. Numerical simulations on the experimental problem for both the forced oscillation test and the wave–body interaction test are carried out, and the results are compared to the measurements. All of the comparisons are reasonably good. It is shown, based on the numerical examples, that the present CIP-based Cartesian grid method is an accurate and efficient method for predicting strongly nonlinear wave–body interactions.

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Authors and Affiliations

  1. RIAM, Kyushu University, 6-1 Kasuga-koen, Kasuga, Fukuoka, 816-8580, Japan

    Changhong Hu

  2. Graduate School of Engineering, Osaka University, 2-1 Yamada-oka, Suita, Osaka, 565-0871, Japan

    Masashi Kashiwagi

Authors
  1. Changhong Hu
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  2. Masashi Kashiwagi
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Correspondence to Changhong Hu.

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Hu, C., Kashiwagi, M. Two-dimensional numerical simulation and experiment on strongly nonlinear wave–body interactions. J Mar Sci Technol 14, 200–213 (2009). https://doi.org/10.1007/s00773-008-0031-4

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  • DOI: https://doi.org/10.1007/s00773-008-0031-4

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