Sprays and liquid atomisation

Liquid atomisation is the process wherein a liquid bulk is converted to a collection of droplets leading to the formation of a spray and has numerous applications in engineering and science. Upon atomisation, the bulk liquid is fragmented to a spray system where the droplets disperse interacting with each other and the gaseous ambient environment. Thus, atomisation can be considered as the result of the inertia and the external forces acting on the jet surface. Atomisation modelling supplies the initial conditions for spray computations i.e. the droplet size, velocity, temperature e.t.c. Understanding the fragmentation process is a challenging task since there are still many uncertainties about the fundamental mechanisms of the liquid disintegration. Atomisation depends on the complex interactions between the aerodynamic and capillary forces. Turbulence and shear layers deform the liquid-gas interface while the surface tension can amplify instabilities. The solver can capture both Rayleigh-Taylor and Kelvin-Helmholtz instabilities using advanced modelling ideas for interface tracking between the two phases. One of the features of cryoFoam is the natural transition from an Eulerian to Lagrangian framework as shown below using Large-Eddy-Simulations.