Wave Drift Forces Calculation on two floating bodies Based on the boundary element method - Attempt for Improvement of the Constant Panel Method

[+] Author and Article Information
Qiao Li

Researcher, Institute of Industrial Science, The University of Tokyo; Graduate School of Engineering, Osaka Prefecture University, Osaka, Japan 5998531

Yasunori Nihei

Associate professor, Graduate School of Engineering, Osaka Prefecture University, Osaka, Japan

1Corresponding author.

ASME doi:10.1115/1.4042180 History: Received July 11, 2017; Revised November 30, 2018


An improved constant panel method for more accurate evaluation of wave drift forces and moment is proposed. The boundary element method (BEM) of solving boundary integral equations is used to calculate velocity potentials of floating bodies. The equations are discretized either by the higher order boundary element method or the constant panel method. Though calculating the velocity potential via the constant panel method is simple, the results are unable to accurately evaluate wave drift forces and moment. An improved constant panel method is introduced to address these issues. The improved constant panel method can, without difficulty, employ the near field method to evaluate wave drift forces and moment, especially for multiple floating bodies. Results of the new evaluation method will be compared with other evaluation method. Additionally, hydrodynamic interaction between multiple floating bodies will be assessed.

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