Helicopters and tiltrotors provide many useful civil and military functions without the need for airports and runways. Modern rotorcraft designs continue to push the technology to improve vehicle performance, safety, and reduce its impact on the environment. However, the accurate simulation of rotorcraft flow fields with computational fluid dynamics (CFD) continues to be a challenging problem. Rotor blades generate blade-‐tip vortices as they spin around and encounter the vortices of other blades as well. This can result in very complex blade vortex interaction (BVI) and vortex wake interactions. Moreover, rotorcraft simulation is multidisciplinary and must take into account the interaction between rotor blade aerodynamics, blade flexibility, and blade motions to achieve trimmed steady flight.
Breakthrough in Rotorcraft Prediction Accuracy Using Detached Eddy Simulation
2012
36 pages
Report
No indication
English
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