Research on Aerodynamic Noise Reduction for High-Speed Trains

Table 2

Main modelling schemes adopted for the CFD simulations.

Time dependency	Steady	Unsteady
Turbulence model	RNG -	DDES
Solver	Pressure based	Pressure based
Pressure-velocity coupling	SIMPLEC	PISO
Pressure discretization	Standard	PRESTO!
Momentum discretization	Second-order upwind	Bounded central differencing
Turbulent kinetic energy discretization	QUICK	QUICK
Turbulent dissipation rate discretization	Second-order upwind	Second-order upwind