Time-dependent Navier-Stokes flow simulations have been carried out for a UH-60 rotor with simplified hub in forward flight and hover flight conditions. Flexible rotor blades and flight trim conditions are modeled and established by loosely coupling the OVERFLOW Computational Fluid Dynamics (CFD) code with the CAMRAD II helicopter comprehensive code. High order spatial differences, Adaptive Mesh Refinement (AMR), and Detached Eddy Simulation (DES) are used to obtain highly resolved vortex wakes, where the largest turbulent structures are captured. Special attention is directed towards ensuring the dual time accuracy is within the asymptotic range, and verifying the loose coupling convergence process using AMR. The AMR/DES simulation produced vortical worms for forward flight and hover conditions, similar to previous results obtained for the TRAM rotor in hover. AMR proved to be an efficient means to capture a rotor wake without a priori knowledge of the wake shape.
Detached Eddy Simulation of the UH-60 Rotor Wake Using Adaptive Mesh Refinement
AHS International 68th Annual Forum ; 2012 ; Forth Worth, TX, United States
2012-05-01
Aufsatz (Konferenz)
Keine Angabe
Englisch
Detached Eddy Simulation of the UH-60 Rotor Wake Using Adaptive Mesh Refinement
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