The group uses several compressible and incompressible computational fluid dynamics (CFD) codes that have been developed in-house over many years. We are continually improving the functionality of these codes through the development of new numerical methods. This page show cases some of the numerical methods developed recently by the group.

Incompressible Flow Algorithms – Curvilinear Coordinates on a Staggered Mesh

We have recently developed a new staggered mesh curvilinear coordinate scheme for incompressible flow. The scheme has been incorporated into PUFFIN and is currently being used to study flow around river bends.

The video shows the development of flow through a periodic sinusoidal channel visualised by vorticity.

For more information, please contact: Assoc. Prof. Michael Kirkpatrick.

 

 

Flow through a periodic sinusoidal channel visualised by vorticity
High-Order Compressible Flow Algorithms

A particular focus of this research has been the development of very high order accurate schemes that can be applied to compressible flows at all speeds in industrial geometries with multiple species and be easily parallelisable.

A visualisation from a simulation of a compressible turbulent mixing layer initialised from at broadband perturbation is shown on the left. This computation used 3 billion points, and ran on 1024 cores for a week.

For more information, please contact: Assoc. Prof. Ben Thornber.

Massively Parallel Simulations

All USyd CFD codes are MPI parallelised and run efficiently on the local cluster ‘Borg’, the Univerity cluster ‘Artemis’ and the national facilities ‘Raijin’ and ‘Magnus’. The group has a number of projects with substantial CPU hours granted on Artemis, Raijin and Magnus. This enable researchers within our group to routines run computations on 512-1000s cores at once.

The scaling of the USyd algorithm FLAMENCO up to 4096 cores on the EU HPC Hermit is shown in the image on the right.

For more information, please contact: Assoc. Prof. Ben Thornber.