Experiment Investigation and Numerical Simulation of Snowdrift on a Typical Large-Span Retractable Roof

Table 2

Comparison of physical parameters of snow particles.

Kind of particles	Natural snow	Artificial snow
Diameter Dp (mm)	0.15∼0.50	0.2∼0.50
Particle density ρp (kg/m^3)	126∼294	540∼575
Bulk density ρb (kg/m^3)	90∼210	386∼411
Threshold friction velocity (m·s^−1)	0.20	0.35
Angle of repose θ (°)	30∼50	45