In order to investigate the differences of hydraulic characteristics between Xshape flaring gate piers(FGP) and Y-shape flaring gate piers,the RNG k-ε turbulent model was applied to numerically simulate the 3D flows in stepped spillways with flaring gate piers.

Numerical simulation of turbulence fFlow in spiraled and sprayed calciner using RNG k-ε models;

Evaluation of the RNG k-ε model on the numerical simulations of supercavitating flows around a hydrofoil;

Methane distribution in intake,robbing working surface and outtake was simulated using RNG k-ε model by Fluent according to conversation equation in turbulent state,turbulent kinetic energy equation and turbulent dissipation rate equation.

The effects of the gap between the driver cab and the freight body of the heavy-duty truck on its aerodynamic characteristics were simulated by means of a simplified truck model ground transportation system(GTS) using the RNG k-ε turbulence model and hybrid mesh technique.

The 3-D turbulent flow in 90° bending duct of circular-section was simulated numerically by the RNG k-ε turbulent model in FLUENT.

The RNG k-ε turbulent model was also modified,for enabling correct calculations of three-dimensional and two-phase turbulent reactive flows under a non-staggered grid system.