Research Article
Experiment Investigation and Numerical Simulation of Snowdrift on a Typical Large-Span Retractable Roof
| Conditions | Settings |
| Computational domain | 220 m (x) × 40 m (y) × 24 m (z) |
| Number of elements | Approximately 1,500,000 |
| Minimum mesh size | 0.04 m |
| Inflow boundary | Wind velocity profile (see equation (8)), where and z0 are 7.4 m/s and 0.9 m, respectively Snow fraction profile (see equation (12)) |
| Outflow boundary | Zero gradient condition; the wind velocity gradient ∂u/∂n and snow fraction gradient ∂f/∂n are set to zero (outflow) |
| Upper face and side | Zero gradient condition for all variables; the normal components of the wind velocity with respect to the boundaries are set to zero (symmetry) |
| Building and ground surface | No-slip boundary condition (wall), except that the wall roughness z0 = 5.0 × 10−5 for the snow surface |
| Turbulence model | SST k-w model, k-kl-w model, realizable k-ε model |
| Multiphase model | Mixture model |
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