Electrostatic fields for the control of evaporating charged fuel sprays

The current socio-economic shift towards electrification of the transport sector and development hybrid thermal-electric propulsion systems provides new opportunities for ‘clean’ aviation technologies. In this work, use electrostatic fields to control location electrically charged fuel droplets is proposed as a novel technology enhance pre-evaporation liquid sprays in confined spaces. An electrospray cross-flow numerically investigated using large-eddy simulations range flow droplet conditions order study feasibility approach. A deterministic model further introduced compute trajectory single steady cross-flow. This enables separation effects turbulence, repulsion evaporation through comparison with data obtained from numerical simulations, at same time cheap computational tool explore wider operating conditions. It shown that external below breakdown threshold air can significantly change moderate velocities. Moreover, forces acting opposite direction mean potentially be used stabilise spray position within region, hence allowing an increase residence available full evaporation. application modulation such envisioned paradigm achieve ‘ targeted ’ next-generation aero-engines improve fuel-oxidiser mixing quality. electrical power associated field stabilisation negligible compared thermal released by complete combustion injected fuel. addition, it enhances rate (by more than 30%) quality due relative velocity between gas flow, well turbulence induced stagnating cloud. results work offer insight advanced injection strategies based on electrohydrodynamics. • Electrostatic are applied sprays. Droplets stabilised bulk quasi-infinite times. Such was found 30% concept also