LAGRANGIAN METHOD MODELING AND FIELD MEASUREMENT ON SNOWRIFT

The re-distribution of snow around a cube is modelled through the Lagrangian method. Real snow particles are also used during field measurements in the northeast region of China. The results of the numerical simulation are compared with those from the field measurements, and the results are found to agree with each other in trend. Snow deposition occurs in front of the cube and snow erosion is found at windward sides. Small amounts of snow deposition are observed in the leeward region of cube. Since the crosswind is not considered in the numerical simulation, the results of the numerical simulation were found to be very different from those from the field measurement at the bottom of the cube's windward side. At the same time, the influence of the snow particle's threshold friction velocity on deposition/erosion is also analyzed in the paper.