This week’s planned speaker, Angus Fotherby, was unwell and could not give the first seminar of the new year. We wish him a quick recovery and hope he will be able to return before the end of term to tell us about Chromium contamination and remediation in India. Today, professor Andy Woods discussed a number
Investigating exsolution of metal nanoparticles is an area of evolving interest. Metal nanoparticles have been found to exsolve from metal oxides in the perovskite family under reducing conditions and investigated as fuel cell anodes. Professor Stephen Skinner works at the Department of Materials at Imperial College, and today spoke about the research his group has been carrying
The storage of renewably-generated energy as hydrogen via the electrolysis of water is a fundamental cornerstone of a sustainable hydrogen economy. Conventional electrolysers usually require stable power inputs in order to operate effectively and safely and so may be unsuited to harnessing renewable power, which is often intermittent and diffuse. Professor Mark Symes, from the
During the last fifteen years there has been a paradigm shift in the continuum modelling of granular materials, most notably with the development of rheological models, but also with significant advances in theories for particle segregation. Professor Nico Gray from the University of Manchester has developed new theoretical and numerical frameworks which couple granular flows
Professor Joe Howe is the Net Zero Professor at the University of Lincoln and the academic lead for the Humber Industrial Cluster. The Humber Cluster spans both banks of the Humber Estuary, connected by the Humber Bridge and hosting the ports of Goole, Grimsby, Hull, Immingham and Killingholme. £18 bn of the UK’s economy is
Particle-driven convection occurs when a layer of fluid containing dense particles is located above a layer of clear, particle-free fluid. This can drive a variation on the classical Rayleigh-Taylor instability, where the particles induce the density difference between the layers. Variants of this instability occur in a number of geophysical flows, such as the undersides
Ten years ago, the Paris COP conference heralded an exceptional meeting to tackle climate change, backed by science, and soon embraced by industry. Much has been achieved, particularly in electrification through the explosive growth of renewables and EVs. However, the original optimism now risks stalling in much of the world as the reality of displacing
Large-scale storage technologies are crucial to balance consumption and intermittent production of renewable energy. At times of excess production, some renewable energy might be converted into compressed air or hydrogen, which is then stored in underground salt caverns. The energy is recovered later, when renewable production becomes insufficient. Herminio Tasinafo Honorio, from Delft University of
Wave breaking occurs at the ocean surface at moderate to high wind speeds, with significant impacts on the transfer of momentum, energy and mass between the ocean and the atmosphere. When waves break, the water surface overturns: this generates bubbles and sea spray and largely enhances the gas exchange. Stéphane Popinet, from the Institut d’Alembert
The accurate modelling of geophysical flows often requires information which is difficult to measure and therefore poorly quantified. For example, it is difficult to estimate the viscosity of lava during a volcanic eruption, or some of the properties of the ice flowing within a glacier. However, when the flow is bounded by a free surface,