Project A3 (finished)
Project A3 - Mesh-Free Simulation of Port Hydrodynamic Problems
Principal investigator: Thomas Rung
Background and Motivation
The principal aim of the project is the development of a computational procedure to investigate port-hydrodynamic problems. The employed apporach is based on the Lagrangian Smoothed-Particle-Hydrodynamics (SPH) method. Investigated examples refer to ship (un)berthing. Emphasis is given to the generation of potholes (scours), which are induced by the ship's propulsion and manoeuvering devices (e.g. transverse thrusters and propellers) and significantly weaken the quay-wall support. The application of the methodology strives for an assessment of potential counter-measures.
Aims and Objectives
Harbor flows are governed by confined- & shallow-water effects. The wetted domain dynamically changes during the maneuvering process. Moreover, the harbor bed is exposed to severe loads of the ship's propulsion and maneuvering devices which causes severe erosion.The predictive challenge refers to the interaction of multiple continua (fluid-soil) and multiple flow-phases (air-water) as well as the large relative motions to be considered in generally confined regimes. The latter makes grid-based Eulerian simulation methods (e.g. FV- or FE-methods) undesirable, due to the severe geometrical restrictions of a grid-based discretization approach.
Mesh-free Lagrangian methods, like Smoothed-Particle-Hydrodynamics, which discretize the fluid rather than the domain, are of advantage when large relative motions should be captured. The SPH-method is inherently unsteady and applicable to problems dealing with multiple phases and continua, including contact problems. Present efforts are concerned with the following aspects: viscous/ turbulent flows, multiple continua, prediction of pressure in incompressible media as well as MPI paralellisation.
More details can be found at here.