Numerical solution for Laplace equation with mixed boundary condition for ship problem in the sea

Fitriani Tupa R. Silalahi, Wono Setya Budhi, Didit Adytia, E. van Groesen

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review


One interesting phenomena is investigating the movement of ships at the sea. To start with the investigation in modelling of this problem, we will assume that the ship is only a one-dimensional object that is floating on the sea surface. Similarly, we assume that the water flow is uniform in parallel directions to the ship. Therefore, we simply use the two-dimensional Laplace equation in this problem. In the section that describes the surface of sea, Neumann boundary condition is imposed in part related to the ship and the Dirichlet boundary condition for others. Then on the other three boundaries, we imposed the Neumann boundary condition by assuming that the water does not flow on the bottom, and both end. The model is solved by numerical solution using the finite element method. Velocity potential solution on the whole domain is demonstrated as a result of the implementation of the finite element method. In this paper, we initiate an investigation with assuming that the ship is on the water so that the domain of the Laplace equation is rectangular. Then we assume the drift ship. Furthermore, we also study the dependence of width and depth of the domain to the velocity potential.

Original languageEnglish
Title of host publication5th International Conference on Mathematics and Natural Sciences, ICMNS 2014
Subtitle of host publication2–3 November 2014, Bandung, Indonesia
EditorsAcep Purqon, Taufiq Hidayat, Reuben Jih-Ru Hwu
PublisherAmerican Institute of Physics
ISBN (Electronic)978-0-7354-1324-5
Publication statusPublished - 30 Sep 2015

Publication series

NameAIP Conference Proceedings
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

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