Design method for s-CO2 gas turbine power plants: Integration of thermodynamic analysis and components design for advanced applications

Supercritical CO2 (s-CO2) Brayton power plants present advantages like the possibility of using external thermal energy sources (concentrated solar radiation or biomass combustion), high conversion efficiency at moderate temperatures, and possibly low operational and investment costs. This work stemmed from the observation that the optimization...

Numerical modelling of droplet formation in mesh nebulizers

It is common practice to use the inhalation route to deliver medicine in the form of aerosol to treat patients with pulmonary ailments like cystic fibrosis. In pulmonary drug delivery, medicine in the form of small droplets is inhaled by patients and delivered to their lungs. A major challenge faced in developing such devices is that effective...

The Influence of Tar on the Performance of Solid Oxide Fuel Cells

"As fossil fuels are depleting, polluting and an increasing source for global conflicts it has become important to find alternatives. It is essential to develop conversion chains that are able to compete with the non-renewable energy sources both technically and economically. Biomass is an upcoming flexible energy source, and has a close to...

Physically accurate advection: A discrete representation of the Lie Derivative

Mimetic discretization methods are emerging techniques designed to preserve, as much as possible, properties of the continuous differential equation. In this framework the geometric nature of physics plays a crucial role. Thus, it is necessary to use a new language to model physical problems, Differential Geometry. The calculus of differential...

A Validation Study for Turbulent Premixed Flame Propagation in Closed Vessels

Pressure rise in closed containments during accidental explosions is an important issue for the safety of nuclear power plants. For numerical prediction, several combustion models have been proposed by researchers to close the averaged balance equations describing the combustion process. In order to simulate these turbulent flame propagations,...