Time-Accurate versus Actuator Disk Simulations of Complete Helicopters

摘要: This report describes numerical simulation of the flow around helicopter fuselage-main rotor-tail rotor configurations using quasi-steady actuator disk approach and time-accurate that resolves relative motion main tail rotors with respect to fuselage. The computations predict both instantaneous fields by solving Reynolds-averaged Navier-Stokes (RANS) equations in three dimensions a finite volume method block structured grids. Turbulence effects are taken into account via two-equation k — ω model. was accomplished an overlapping grid technique (Chimera). DLR. CFD code FLOWer applied parallel mode obtain solution at each time step. were performed on 8 processors NEC-SX6 Hochstleistungsrechenzentrum Stuttgart (HLRS)