Research Article
Diffusion in Replica Healthy and Emphysematous Alveolar Models Using Computational Fluid Dynamics
Table 3
Steady-state (SS) times, deposition efficiencies, and percent error associated with the steady-state approximation for various residence times.
| | Particle size | Healthy (H) | Emphysema (E) | | 1 nm | 3 nm | 1 nm | 3 nm |
| | Deposition from unsteady simulation | 96% | 96% | 94% | 93% | | SS time (seconds) | 0.08 | 0.26 | 0.17 | 0.49 |
| | Percent that steady-state simulation overestimates unsteady simulation results |
| | Residence time | | | | | | SS time | 0.50% | 1.46% | 1.06% | 4.12% | | 1 s | 0.04% | 0.38% | 0.18% | 1.98% | | 5 s | 0.01% | 0.08% | 0.04% | 0.39% |
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