ScienceOpen'Field Evaporation Simulation in #ElectrosprayThrusters Using Electrohydrodynamics–Particle-in-Cell Method' - an article in the #AIAA Space Collection on #ScienceOpen:
🗞️🔗 https://www.scienceopen.com/document?vid=42d598ba-d5b1-4fa6-b940-6cfb41a67474
#ElectricPropulsion #ParticleInCell #Electrohydrodynamics #SpaceTech
Field Evaporation Simulation in Electrospray Thrusters Using Electrohydrodynamics–Particle-in-Cell Method
<p xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" class="first" dir="auto" id="d3974389e225">Ionic liquids in electrospray thrusters undergo elongation and ion emission when subjected to strong electric fields. This process typically involves multiple physical fields and spans various temporal and spatial scales. In this study, a fully coupled electrohydrodynamics–particle-in-cell method is proposed to perform transient simulation of this process. Based on this method, the dynamic deformation of freely suspended ionic liquid droplets in an electric field was simulated, changes in physical quantities (such as surface charge density, current density, and velocity over time) were recorded, and the acceleration and displacement of emitted ions in the electric field were captured. In this study, the impact of emitted ions on the electrohydrodynamic behavior of droplets was analyzed in detail and the significance of this impact under different ion masses and droplet conductivities was compared. The results indicate that the ion beam has certain inhibitory effects on the deformation and ion evaporation process of the droplets, with the inhibitory effects becoming more pronounced as the ion mass and conductivity increase. Although conductivity remains the primary limiting factor in the field evaporation process of ionic liquids, it can be anticipated that space-charge effects will eventually replace conductivity as the dominant limiting factor as conductivity continues to increase. </p>
HGPU group
Jitse Niesen