Table 2. Mean Values of the Observables First-Hitting-Time tfirst, and Mean Values of the Following Observables at the First-Hitting-Time: Jet Velocity Measured at the Collector vjet(tfirst), Jet Path Length λ(tfirst), and Tortuosity Degree Parameter Λ(tfirst)a.
| case I | case II | case III | |
|---|---|---|---|
| observables | vflow = 0 m/s | vflow = −10 m/s | vflow = −20 m/s |
| ⟨tfirst⟩ (s) | 1.0385 × 10–2 ± 8 × 10–6 | 1.058 × 10–2 ± 1 × 10–5 | 1.101 × 10–2 ± 2 × 10–5 |
| ⟨vjet(tfirst)⟩ (m/s) | 19.6 ± 0.2 | 19.3 ± 0.3 | 19.5 ± 0.4 |
| ⟨λ(tfirst)⟩ (cm) | 172.8 ± 0.2 | 194.4 ± 0.7 | 214.8 ± 0.8 |
| ⟨Λ(tfirst)⟩ | 10.8 ± 0.1 | 12.1 ± 0.3 | 13.1 ± 0.4 |
a
The averages were computed over all the ten trajectories for each of the three cases of gas flow speed vflow. We report also the error as standard deviation of distribution.