Investigation of the Aerodynamic Characteristics of Platoon Vehicles Based on Ahmed Body

Table 2

Comparison of drag coefficients simulated by three turbulence models with experimental values.

Turbulence model	CD (CFD)	CD (EXP)	Relative error (%)
Standard k-ε	0.3481		28.93
RNG k-ε	0.2663	0.27	1.37
Realizable k-ε	0.2728		1.03