Wind effects on structures can be a major design criterion.
This work investigates methods for

numerically analysing the fluid flow around geometrically complex bodies and possible interaction

effects with structural oscillations.

The grid-free Vortex Particle Method is utilised to discretise the Navier-Stokes equations and to

evolve the fluid flow in time. The two-dimensional, viscous, laminar implementation of this method

used here is described in detail. A novel hybrid Particle-Particle--Particle-Mesh algorithm is

developed which achieves a highly efficient particle velocity computation. This allows for a large

number of computational elements and thus high-resolution simulations at modest computational cost.

Furthermore, a new particle remeshing strategy is presented.

The convergence and applicability of the method to engineering fluid dynamics problems is

illustrated using a number of classical problems. Applications of the code to general problems in

the field of Wind Engineering are also described. A very high level of spatial and temporal

resolution is achieved. All discussions contain comparisons with experimental or other numerical

studies. Visualisation techniques are used to obtain comparative data.

This work indicates that such numerical techniques could become useful tools in each phase of the

Wind Engineering design of structures. They allow for an easy pre- and postprocessing and yield

valuable insight into aerodynamic effects at mild computational cost.

numerically analysing the fluid flow around geometrically complex bodies and possible interaction

effects with structural oscillations.

The grid-free Vortex Particle Method is utilised to discretise the Navier-Stokes equations and to

evolve the fluid flow in time. The two-dimensional, viscous, laminar implementation of this method

used here is described in detail. A novel hybrid Particle-Particle--Particle-Mesh algorithm is

developed which achieves a highly efficient particle velocity computation. This allows for a large

number of computational elements and thus high-resolution simulations at modest computational cost.

Furthermore, a new particle remeshing strategy is presented.

The convergence and applicability of the method to engineering fluid dynamics problems is

illustrated using a number of classical problems. Applications of the code to general problems in

the field of Wind Engineering are also described. A very high level of spatial and temporal

resolution is achieved. All discussions contain comparisons with experimental or other numerical

studies. Visualisation techniques are used to obtain comparative data.

This work indicates that such numerical techniques could become useful tools in each phase of the

Wind Engineering design of structures. They allow for an easy pre- and postprocessing and yield

valuable insight into aerodynamic effects at mild computational cost.

[Cambridge University | CUED | Structures Group | Geotechnical Group ]