  In this paper, we numerically studied the effects of mechanical vibration and
magnetic fields on evaporative cooling process carried in space station by
direct simulation Monte Carlo method. Simulated with the vibration data of
international space station, we found that the cooling process would suffer
great atomic losses until the accelerations reduced tenfold at least. In
addition, if we enlarge the s-wave scattering length five times by Feshbach
resonance, the PSD increased to 50 compared to 3 of no magnetic fields
situation after 5 seconds evaporative cooling. We also simulated the two stages
crossed beam evaporative cooling process (TSCBC) under both physical impacts
and obtain $4\times10^5$ $^{85}$Rb atoms with a temperature of 8 pK. These
results are of significance to the cold atom experiments carried out on space
station in the future.
