Research Article
Experiment Investigation and Numerical Simulation of Snowdrift on a Typical Large-Span Retractable Roof
| | Conditions | Settings |
| | Computational domain | 850 m(x) 250 m(y) 60 m(z) (the building was located at 1/3 away from the entrance of airflow) |
| | Number of elements | Approximately 4,800,000 |
| | Minimum mesh size | 0.35 m |
| | Inflow boundary | Wind velocity profile (see equation (7)), where and z0 are 11.4 m/s and 6 m, respectively
Snow fraction profile (see equation (8)) |
| | 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, and 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 | Realizable k-ε model |
| | Multiphase model | Mixture model |
| | Residual | 10–7 |
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