ABSTRACT
In this study, the vortex-shedding pattern and hydrodynamic force acting on the surface of a marine pipe near a flat boundary are simulated numerically. The Navier-Stokes equations with the use of Large Eddy Simulation (LES) model are numerically solved to predict flow pattern and to calculate the pressure distribution on the surface of the pipe. The governing equations are solved based on 2D Galerkin finite volume algorithm. Due to the high flexibility of unstructured triangular meshes for modeling any complex geometry, this type of meshing is selected in the present study. Evaluation of the numerical modeling shows that this method is able to predict the hydrodynamic force and flow pattern over the pipe properly. In addition, the results prove that the vicinity of the bed shear layer to cylinder shear layer would significantly influence the vortex-shedding pattern.
