Study of Passing Ship Effects along a Bank by Delft3D-FLOW and XBeach

When a ship sails with a certain speed, there is always a return current along and under the ship. The return current induces a water level depression around the ship. When the ship travels along a bank, the flow field around the ship is asymmetrical. Additional bank effects will be induced. A reliable estimation of all these effects and the...

A suite of sharp interface models for solid-state transformations in alloys

A suite of mathematical models for solid-state phase transformations in solid-state alloys is presented. The work deals in particular with dissolution and growth of particles in solid-state alloys. Several models are presented and numerical solution procedures are summarized briefly. Further, some analytic solutions are considered shortly, which...

Non linear transformation field to build moving meshes for patient specific blood flow simulations

Our study propose a method to build patient specific geometric data and boundary conditions for unsteady CFD runs with variable meshes valid over the cardiac cycle. We develop a specific MRI protocol in order to extract the full geometric data at several phases over the cardiac cycle. Hemodynamic boundary conditions were acquired by means of...

Numerical Simulation of Flow over an Axisymmetric body in Free Flight

Flow field around a projectile after thrust has been stopped and in inertia flight is studied numerically by a finite difference scheme. This study aims at clarifying the mechanism of free flight, which is generated and developed by rotation of body and gravity. Among two types of projectiles concerned a three-dimensional flow around the slender...

Fictitious Boundary and Moving Mesh Methods for the Numerical Simulation of Particulate Flow

This paper discusses numerical simulation techniques using a moving mesh approach together with the multigrid fictitious boundary method (FBM) for liquid-solid flow configurations. The flow is computed by an ALE formulation with a multigrid finite element solver (FEATFLOW), and the solid particles are allowed to move freely through the...

A conservative MURD scheme on moving domains: Application to three-dimensional free surface flows

We introduce a monotonic and conservative numerical scheme for the resolution of the linear advection problem set on a moving domain. The scheme is based on an extension to moving domains of the Multidimensional Upwind Residual Distributive (MURD) approach. The properties ensured by the residual distribution schemes set on fixed domains are not...

An ALE scheme for numerical simulation of 2D underwater explosion

In the present study an ALE scheme is developed on the unstructured meshes for the simulation of multi-material compressible flows in which a gas phase zone is separated from a compressible liquid zone by an immiscible interface. The method is used for the simulation of 2D underwater explosion near a solid surface.

Numerical Simulation of Separated Flow over Flexible Structural Membranes

This research project aims to study large displacement fluid-structure interaction (FSI) problems through the development of a computational FSI code. The Navier-Stokes equations describing the behaviour of a viscous Newtonian fluid are discretised on a moving unstructured triangular mesh using the Finite Volume method. In two-dimensions the...