Blizzards seriously affect the safe operation of trains. To prevent traffic accidents

the international standard CEN-TR 16251 proposes that snow drift tests should be conducted in an artificial climate room before trains go online. The artificial climate chamber is affected by the multi-air coupling of its air supply and snow drifting equipment. In this study

a numerical simulation for the train’s artificial climate chamber was conducted to investigate the motion characteristics of ice and snow particles. The results showed that when the diameterof ice and snow increased from 1.6 mm to 3.2 mm

the trajectory inclination angle was increased by 82.9%; the snowfall area was reduced by 73.1%; the snowfall distance was shortened by 54.7%. When the initial wind speed increased from 4.67 m/s to 7.82 m/s

the trajectory inclination angle was increased by 5%; the snowfall area was decreased by 63.3%;the snowfall distance was decreased by 6.41%. When the climate chamber wind speed increased from 1.98 m/s to 6 m/s

the trajectory inclination angle was reduced by 67.3%; the snowfall area was increased by approximately 500%; the snowfall distance was extended by approximately 460%. In addition

based on the simulation results

a prediction model for the trajectory of ice and snow particles under multi-parameter coupling was established. This model can accurately predict the trajectory of ice and snow particles

thereby providing technical support for implementing the snow drift experiment in the artificial climate chamber of trains.