Implementation of Generalized Modes in a 3D Finite Difference Based Seakeeping Model

Matilde H. Andersen, Mostafa Amini Afshar, Harry B. Bingham

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Abstract

This work is an extension of the finite difference potential flow solver OceanWave3D-Seakeepingdeveloped by Afshar (2014) to include generalized modes. The continuity equation is solvedusing a fourth-order centered finite difference scheme which requires that the entire fluid domainis discretized as opposed to the more popular panel method where only the body surface - andsometimes the free surface and sea bottom - are discretized. The advantage for the finitedifference solver is thought to be found for complex or high-resolution problems where thecomputational time will scale better due to the sparse nature of the coefficient matrix. Thesolver is built using the open source framework Overture which consists of C++ libraries forsolving partial differential equations on overlapping grids and has a built-in overlapping gridgenerator Ogen.
Original languageEnglish
Publication date2017
Number of pages4
Publication statusPublished - 2017
Event32nd International Workshop on Water Waves and Floating Bodies (IWWWFB 2017) - Dalian, China
Duration: 23 Apr 201726 Apr 2017

Conference

Conference32nd International Workshop on Water Waves and Floating Bodies (IWWWFB 2017)
CountryChina
CityDalian
Period23/04/201726/04/2017

Cite this

Andersen, M. H., Amini Afshar, M., & Bingham, H. B. (2017). Implementation of Generalized Modes in a 3D Finite Difference Based Seakeeping Model. Abstract from 32nd International Workshop on Water Waves and Floating Bodies (IWWWFB 2017), Dalian, China.