research

Image-based modelling can be used to analyse mass transfer phenomena through porous media, with particular applications to reservoir rock pore-throats networks. The aim of these analyses is to improve our understanding and characterisation of the way fluids move through variable pore-scales.

Using real geometries from micro-CT, this project involved generating a 3D model in Simpleware software for visualisation and processing prior to meshing and export to COMSOL Multiphysics® for studying chemical transport mechanisms.

The 2016 Government of Ireland Postdoctoral Fellowship Scheme launches in October 2015 and seeks to fund early-stage postdoctoral researchers across all disciplines for up to 2 years. I am seeking potential postdoctoral candidates that would be willing to apply for funding under this scheme, which, if successful, would allow them to carry out research in the area of Multiscale Mechanics of Biological Tissues in the Biomechanics Research Centre at the National University of Ireland, Galway.

This paper proposes a simple extension to a collocation based composite time integration proposed by Silva and Bezerra. In this scheme, each time step is divided further into two substeps which may not be necessarily equal. In the first substep, the Newmark scheme is employed an d the three point backward Euler scheme is used in the second substep. The proposed scheme is applied to non-linear problems to study the transient response solution under large deformations and long time durations.

This paper proposes a simple extension to a collocation based composite time integration proposed by Silva and Bezerra. In this scheme, each time step is further divided into two substeps which may not be necessarily equal. In the first substep, the Newmark scheme is employed and the three point backward Euler scheme is used in the second substep. Stability analysis of the scheme is performed and spectral radius, period elongation, and amplitude decay are discussed. The influence of Newmark parameters and substep sizes on stability and accuracy is studied in detail.