Dr Cleary is an outstanding talent in computational modelling and has delivered major impact through novel modelling methodologies, software tools and application to numerous industrial applications. His research standing has been built through novel developments in particle-based computational modelling and in using these to create fundamental insights into the flow of particles, fluids, solids and bubbles in complex multiphase systems. His research has had a significant impact on the development and worldwide adoption of particle-based methods for modelling fluid and particles flows.