Study on Adhesion Effect of Martian Dust to Spacecraft Based on DEM-CFD Technology

Mars dust accumulated on the solar array can affect the long-term performance of the solar array. Due to the thin gas flow on Mars, it is difficult to carry out experimental research and this paper study the wind removal process of Martian dust through theory and simulation. Firstly, this paper analyzed the mechanical properties of Martian dust and simulated Martian dust and established the discrete element model of Martian dust. Then the effect of Martian dust on spacecraft under different turbulence models in DEM-CFD model was analyzed. Finally, the simulation was performed and the influence of various parameters on the critical start-up speed of Mars dust was analyzed.