Preliminary Numerical Modelling of the Ionization Region to Model Ionic Propulsion

Ionic propulsion, where charged particles, ions, are produced between electrodes andaccelerate towards the negative electrode, has practical applications as a propulsion systemin the space industry; however, its adoption to in-atmosphere ionic propulsion is relativelynew and faces different challenges. A high potential difference is required to achieve acorona discharge between a positive and negative electrode. In this work, we will explorethe feasibility of ionic propulsion using CFD modelling to replicate the effect of the ions,with a future aim of improving efficiency. The ionization region is modelled for a 15 kVpotential difference, which is replicated with a velocity inlet, based on experimental data.The output velocity from the numerical simulation shows the same trend as theoretical predictionsbut significantly underestimates the magnitude of the ionic wind when comparedwith theoretical estimates. Further modelling is highlighted to improve predictions andassess if the theoretical model overestimates the ionic wind.