Study of the creeping of irregularly shaped Martian dust particles based on DEM-CFD
AUTHOR(S)
P. Cao, P. Xue, T. Ding, T. Tang, X. Hou, Yu, Z, Z. Deng
PUBLISHER
Elsevier
SOURCE
Powder Technology
YEAR
ABSTRACT
In this paper, the adhesion between irregularly shaped Martian dust particles and the Martian probe in the dust storm is studied.First, the characteristics of irregularly shaped Martian dust particles are analyzed using fractal theory and the discrete element simulation model of irregularly shaped Martian dust particles is built.Second, the mechanical model of the adhesion of Martian dust onto the Martian probe is established, and the analytical solution of the critical wind speed is calculated.Finally, a series of simulations based on DEM-CFD are performed to analyze the creeping of irregularly shaped Martian dust particles in the Martian atmospheric environment.The research can provide a theoretical basis for the processes of dust protection and cleaning in a Martian dust storm.