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A Rankine source computation for three dimensional wave–body interactions adopting a nonlinear body boundary condition

A Rankine source computation for three dimensional wave–body interactions adopting a nonlinear body boundary condition
A Rankine source computation for three dimensional wave–body interactions adopting a nonlinear body boundary condition
A three-dimensional wave–body interaction problem is numerically simulated by a Rankine source scheme in combination with a mixed Euler–Lagrange method. Singular free surface source points are placed exterior to the free surface, which is known as a desingularized method, and free surface boundary conditions are satisfied along control points on the computational domain. A new source distribution algorithm incorporating vertical desingularized distance and horizontal free surface source arrangements is developed and the method connects body panel size to free surface panel size. The nonlinear or exact body boundary condition is captured by regridding the wetted body surface at each time step. A Lagrangian frame of reference is used to capture the motion of singularities during the regridding process. The nonlinear effects caused by the variation of the wetted body surface are evaluated based on this method. The numerical scheme of study is shown to be computationally efficient and computation time is significantly reduced in comparison with earlier numerical investigations using the desingularized method
three-dimensional wave–body interaction, desingularized source method, body-exact problem
0141-1187
313-321
Feng, A.
f995c6db-cbfd-43b1-9ad0-505d4cec384f
Chen, Zhi-Min
e4f81e6e-5304-4fd6-afb2-350ec8d1e90f
Price, W.G.
b7888f47-e3fc-46f4-9fb9-7839052ff17c
Feng, A.
f995c6db-cbfd-43b1-9ad0-505d4cec384f
Chen, Zhi-Min
e4f81e6e-5304-4fd6-afb2-350ec8d1e90f
Price, W.G.
b7888f47-e3fc-46f4-9fb9-7839052ff17c

Feng, A., Chen, Zhi-Min and Price, W.G. (2014) A Rankine source computation for three dimensional wave–body interactions adopting a nonlinear body boundary condition. Applied Ocean Research, 47, 313-321. (doi:10.1016/j.apor.2014.06.001).

Record type: Article

Abstract

A three-dimensional wave–body interaction problem is numerically simulated by a Rankine source scheme in combination with a mixed Euler–Lagrange method. Singular free surface source points are placed exterior to the free surface, which is known as a desingularized method, and free surface boundary conditions are satisfied along control points on the computational domain. A new source distribution algorithm incorporating vertical desingularized distance and horizontal free surface source arrangements is developed and the method connects body panel size to free surface panel size. The nonlinear or exact body boundary condition is captured by regridding the wetted body surface at each time step. A Lagrangian frame of reference is used to capture the motion of singularities during the regridding process. The nonlinear effects caused by the variation of the wetted body surface are evaluated based on this method. The numerical scheme of study is shown to be computationally efficient and computation time is significantly reduced in comparison with earlier numerical investigations using the desingularized method

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More information

Published date: 2014
Keywords: three-dimensional wave–body interaction, desingularized source method, body-exact problem
Organisations: Fluid Structure Interactions Group

Identifiers

Local EPrints ID: 368888
URI: http://eprints.soton.ac.uk/id/eprint/368888
ISSN: 0141-1187
PURE UUID: 9c83954c-86ed-405c-af77-f17c66d3bd30

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Date deposited: 23 Sep 2014 08:34
Last modified: 08 Jan 2022 00:30

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Contributors

Author: A. Feng
Author: Zhi-Min Chen
Author: W.G. Price

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