Computational Modelling Group

Maple

For queries about this topic, contact Sam Dolan.

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Projects

Efficient algorithms for liquid crystal alignment

Giampaolo D'Alessandro, Timothy Sluckin (Investigators)

We have developed an efficient algorithm to determine the liquid crystal alignment in the absence of defects. The aim of this project is to extend this algorithm to include defects.

Numerical Elastic Neutron Stars

Ian Hawke, Ian Jones (Investigators), Andrew Penner

We study the astrophysical effects of the crust on a neutron star using an elasto-hydrodynamic model.

Self-Force and Black Hole Inspirals

Sam Dolan (Investigator)

We use IRIDIS to compute the self-force acting on a solar-mass black hole orbiting a supermassive black hole.

Vertical turbulence structures in the benthic boundary layer as related to suspended sediments

Hachem Kassem (Investigator), Charlie Thompson

There is a genuine need for better, more robust modelling of suspended sediment transport in the coastal zone, both to understand its morphological evolution and it's impact on biogeochemical cycling, ecosystems services and to guide engineering applications such as dredging and defence schemes against erosion and flooding.
The suspension of sediment in turbulent flows is a complex case of fluid-particle interaction, governed by shear stresses (momentum exchanges) at the bed and within the benthic boundary layer (BBL). The intermittent transfer of momentum is a manifestation of coherent turbulent vortex structures within the flow. The passage of such structures (or clusters of) is often related to perturbations of bottom sediment, which may be entrained and maintained in suspension if sufficient turbulent energy is provided. The first part of my PhD investigated the temporal and scale relationships between wave–generated boundary layer turbulence and event–driven sediment transport in oscillatory flow in the nearshore. This involved complex statistical, spectral, quadrant and wavelet analysis of high frequency nearshore measurements of turbulence and suspended sediments (medium sand), collected as part of the EU-funded Barrier Dynamics Experiment II (BARDEX II). The following step aims to develop a 3D numerical model in OpenFOAM which would reproduce the fine scale turbulence structures observed over a fixed rippled bed in oscillatory flow. The 3D velocity field, turbulent components, correlations (stresses) and quadrant structures will then be linked to observed sediment resuspension events. The model will be validated against a set of laboratory experiments undertaken at the Fast Flow Facility at HR Wallingford.

People

Timothy Sluckin
Professor, Mathematics (FSHS)
Giampaolo D'Alessandro
Reader, Mathematics (FSHS)
Nicolas Green
Reader, Electronics and Computer Science (FPAS)
Tiina Roose
Reader, Engineering Sciences (FEE)
Ian Hawke
Lecturer, Mathematics (FSHS)
Ian Jones
Lecturer, Mathematics (FSHS)
Dina Shona Laila
Lecturer, Engineering Sciences (FEE)
Anatoliy Vorobev
Lecturer, Engineering Sciences (FEE)
Charlie Thompson
Senior Research Fellow, Ocean & Earth Science (FNES)
Nicola De Tullio
Research Fellow, Engineering Sciences (FEE)
Sam Dolan
Research Fellow, Mathematics (FSHS)
Patrick Bechlars
Postgraduate Research Student, Engineering Sciences (FEE)
Jean Claus
Postgraduate Research Student, Engineering Sciences (FEE)
Stuart George
Postgraduate Research Student, Mathematics (FSHS)
James Harrison
Postgraduate Research Student, Engineering Sciences (FEE)
James Heppell
Postgraduate Research Student, Electronics and Computer Science (FPAS)
William Hurndall
Postgraduate Research Student, Electronics and Computer Science (FPAS)
Hachem Kassem
Postgraduate Research Student, Ocean & Earth Science (FNES)
David Lusher
Postgraduate Research Student, Engineering Sciences (FEE)
Richard Pichler
Postgraduate Research Student, Civil Engineering & the Environment (FEE)
Jess Jones
Technical Staff, iSolutions
Petrina Butler
Administrative Staff, Research and Innovation Services
John Muddle
Alumnus, Mathematics (FSHS)
Andrew Penner
Alumnus, Mathematics (FSHS)
Doroteya Staykova
None, None