Numerical model of two-dimensional flow dynamic of explicit splitting method

International Conference on Fisheries, Aquatic, and Environmental Sciences 2018

地球科学;农业科学;生态环境科学

Irham, M.^1 ; Miswar, E.^1 ; Khairuman, T.^2 ; Affan, J.M.^1 ; Setiawan, I.^1,3

Faculty of Marine and Fisheries, Syiah Kuala University, Banda Aceh

23111, Indonesia^1

Department of Physics, Faculty of Mathematics and Natural Sciences, Syiah Kuala University, Banda Aceh

23111, Indonesia^2

Ocean Modeling Laboratory, Syiah Kuala University, Banda Aceh

23111, Indonesia^3

关键词: Arrangement model;    Circulation models;    Current distribution;    Flow distribution;    Navier-Stokes hydrodynamics;    Numerical solution;    Two dimensional numerical models;    Two-dimensional flow;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/216/1/012029/pdf
DOI  :  10.1088/1755-1315/216/1/012029

来源: IOP

【 摘 要 】

A solution of partial differential equations has been examined in the 2D Navier-Stokes Hydrodynamic equation by applying a numerical solution. This study aims to discuss the preparation of the circulation model by using a two-dimensional numerical model explicit splitting method. The solution can only be applied if it has fulfilled a stability requirement in determining the time and space steps. In modeling this method, the effects that cause instability such as boundary conditions and initial values of numerical equations was analyzed. Theresults of the rectangular discretization grid arrangement model shows a flow distribution value similar to the SUTRENCH model, which models the linear grid curve. The difference occurred only at the open boundary value in the east, however, the value is not significant to conclude the incompatibility with the verified model. In this study, it is also found that the velocity distribution in front of the jetty is greater than the current distribution in other areas, this is caused by narrowing area passed by the water mass, causing the discharge out of water larger.