Computational Modelling Group

Simulations investigating droplet diameter-charge models, for predicting electrostatically atomized dielectric liquid spray chracteristics

Homepage
http://eprints.soton.ac.uk/353873/
Research Team
John Shrimpton
Investigators
Gabriel Amine-Eddine

Experiment vs CFD comparison of an electrostatically atomized spray plume. Coloured vectors blue to orange correspond to small and large droplets respectively and recirculation occurs due to attraction between droplets and the earthed atomizer body.

Liquid sprays are atomized using electrostatic methods in many scienti fic, industrial and engineering applications. Due to jet and droplet breakup mechanisms, these spray plumes contain a range of drop diameters with differing droplet charge levels. Using an transient charged spray CFD code, simulations have been performed to investigate charge-diameter relationship models for predicting dynamics of poly-disperse and electrostatically atomized hydrocarbon sprays.

The methodology developed can be readily extended towards high-pressure spray applications, where secondary atomization plays a dominant role within the spray dynamics and subsequent performance of the spray itself.

Amine-Eddine, G. H. and Shrimpton, J. S. (2013), On simulations investigating droplet diameter–charge distributions in electrostatically atomized dielectric liquid sprays. Int. J. Numer. Meth. Fluids, 72: 1051–1075. doi:10.1002/fld.3776

Categories

Physical Systems and Engineering simulation: CFD

Algorithms and computational methods: Finite volume, Multi-physics, Multi-scale

Programming languages and libraries: Fortran

Computational platforms: Windows

Transdisciplinary tags: Complex Systems