Table 2.
The boundary conditions in the numerical simulation
| Surface | Velocity | Temperature | Humidity ratio | Discrete phase |
|---|---|---|---|---|
| Ceiling | No slip | 297 K | None | Trap |
| Side wall | No slip | 293 K | None | Trap |
| Floor | No slip | 296 K | None | Trap |
| Human body | No slip | 305 K | None | Trap |
| Supply air | 2.994 m/s | 294 K | RH 20% (0.004895) | Reflect |
| (9.7 L/s per person) | ||||
| Seat | No slip | Adiabatic | None | Trap |
| Outlet | Outflow | Escape | ||
| Nose and mouth of the index patient | 10 m/s, t = 0-0.1 s | 310.15 K | RH 50% (0.01224) | t = 0-0.4 s, Reflect |
| 6 m/s, t = 0.1-0.2 s | ||||
| 4 m/s, t = 0.2-0.3 s | ||||
| 2 m/s, t = 0.3-0.4 s | t > 0.4 s, Trap | |||
| 0 m/s, t > 0.4 s | ||||
| Open area: 0.000968 m2 | ||||
| Back and front surface | Periodic | Escape | ||