Model of overlapping effect of levitation lunar dust

During lunar exploration program, the dust on the lunar surface has a severe impact on the energy utilization efficiency of photoelectric devices, such as solar panels. Based on the model of adherence dust, the effect of levitation dust was analyzed from the view of stereo space. The model of levitation dust, which had the same diameter, was proposed. With the average diameter of the lunar dust, the quantitative relationship between the levitation density of lunar dust and the energy utilization efficiency could be calculated by this model. Then taking the size distribution of the lunar dust into consideration, the model of multi-granularity levitation dust was built, with which the quantitative relationship between the levitation density of lunar dust and the energy utilization efficiency could be calculated for dust with known distribution. A simulation experimental model of levitation dust was set up and experiments were made thrice with different size distributions. The experimental results are matched well with the theory model of either single particle size dust or multi-granularity dust, which verifies the correctness and the reliability of the proposed model of the levitation dust.