Numerical Simulation of Characteris of Electrostatic Migration of Lunar Dust near a Rover on the Lunar Surface
Numerical simulations are conducted to investigate the migration of lunar dusts in the sheath near the lunar rover and the dust deposition process on the surface of the device.Firstly,the distribution of the sheath electric fields near the rover is obtained through a particle-in-cell method.Then,the migration of electrostatically lofted dusts and electrostatically levitated dusts in the sheath and their deposition on the surface of the rover are investigated,respectively.It is found that the perturbation effect of the rover on sheath electric fields enhances the nearby electric field strength,which promotes the migration and deposition of lunar dust to the surface of the rover.When the solar zenith angle is small or moderate,lunar dusts can only migrate to the surface of the rover if a critical traveling velocity is reached.
Numerical simulationParticle-in-cell methodElectric field for sheathElectrostatic loftingElectrostatic migration
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