Numerical Simulation of the Gravity Waves Generated by a Moving Obstacle

2nd International Conference on Mathematical Modeling in Physical Sciences 2013

物理学;数学

Bene, Ludk^1

Department of Technical Mathematics, Faculty of Mechanical Engineering, Czech Technical University in Prague, Karlovo nám 13, 121 35 Prague 2, Czech Republic^1

关键词: Boussinesq approximations;    Constant density;    Finite volume approximation;    Moving obstacles;    Obstacle model;    Stratified fluid;    Time integration;    Viscous incompressible flows;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/490/1/012002/pdf
DOI  :  10.1088/1742-6596/490/1/012002

来源: IOP

【 摘 要 】

The article deals with the numerical simulation of the flow pattern around a moving body in a stratified fluid. The flow is assumed to be unsteady, incompressible and stratified. The mathematical model is based on the Boussinesq approximation of the Navier-Stokes equations for viscous incompressible flow wit non-constant density. The resulting set of PDE's is then solved by the AUSM MUSCLE scheme in finite volume approximation. For the time integration the three stage BDF method of the second order is used. Three different obstacle models were tested.