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Field emission electric propulsion (FEEP) thrusters are useful as µN, µ-radian attitude control devices for satellites. In this study, we simulate in axisymmetric 2D coordinates the emission of charged indium leaving the surface and forming unique droplets. The boundary element method is used to rapidly and accurately calculate the electric field on the fluid surface, which is then advected forward in time using the combined level set and volume of fluid (CLSVOF) method. The probability density function (PDF) of droplet charge to mass ratio is simulated. Each drop influences the size, charge and path of the following new drop.

Simulation of Charge and Mass Distributions of Indium Droplets Created by Field Emission