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Table 5 Time-averaged aerodynamic drag coefficients of different geometric train models

From: Step-by-Step Numerical Prediction of Aerodynamic Noise Generated by High Speed Trains

Part Geometry
Model 1 Model 2 Model 3 Model 4
Head 0.158 0.156 0.140 0.162
Middle 0.055 0.061 0.054 0.063
Tail 0.069 0.067 0.080 0.076
All 0.282 0.284 0.274 0.300