From: Step-by-Step Numerical Prediction of Aerodynamic Noise Generated by High Speed Trains
Level | Total cells (million) | Cd | Difference (%) | SPL (dBA) | Difference (dBA) |
---|---|---|---|---|---|
Coarse | 37.85 | 0.297 | – | 93.2 | – |
Medium | 48.21 | 0.303 | 2.02 | 93.8 | 0.6 |
Fine | 56.23 | 0.300 | − 0.99 | 93.6 | − 0.2 |