Cleavage Fracture Micromechanisms of High Strength Steel and its Heat-Affected Zones

The use of materials in increasingly severe service conditions raises concerns about structural safety with respect to cleavage fracture. There are three main material-related challenges that structures face under harsh environments: 1) the trade-off between strength and toughness; 2) the ductile-to-brittle transition behaviour of BCC high...

A Lattice-Boltzmann CFD study of the hydrodynamics relevant for industrial fermentation processes

Fermentation processes are considered to be essential to decrease our reliance on fossil fuel based products. However, the scale-up from lab-scale to industrial-scale has proven to be difficult. Computational Fluid Dynamics (CFD) has the potential to be a tool to optimize the scale-up and to help engineers understand the relevant hydrodynamics...

Surface tension and rheology: Calibrating the surface tension in SPH independently of the fluid rheology

Spray drying operations can be used to turn products, like for example milk or yeast extract, into powders, extending their shelf life. The properties of those powders (e.g. density or particle size) after spray drying operations depend severely on the dynamics of droplet collisions inside the spray. Currently, costly and wasteful production...