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- W2331065727 abstract "Helicopters are designed to operate in various flight conditions such as hover, low speed and high speed forward flights. Hovering is the most critical flight condition for helicopters, and hovering rotor wake consists of tip vortices from many rotor revolutions that form very complex helical wake structure beneath the rotor plane. This fact makes simulating flow field of the hovering rotors an extremely complicated task. An ideal hover simulation must provide sufficiently accurate flow field variables e.g. (i) tip vortex strength and structure, (ii) boundary layer definition (laminar to turbulent transitions), (iii) shedded boundary layer wake strength and location. These requirements push the limits of what the current CFD software can offer. In the current study, CFD simulations of a hovering S76 rotor will be performed with the emphasis on capturing the tip vortex strength and structure, the effects of turbulence modelings, and the tip geometry configurations. The simulations are performed using commercial CFD software to assess methodologies to capture the tip vortices structure from a hovering rotor. The hover performance results from the present study emphasize on the effects of steady-state/transient solvers, turbulence models, grid resolution (for capturing the tip vortices), and tip shape geometries." @default.
- W2331065727 created "2016-06-24" @default.
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- W2331065727 date "2015-01-03" @default.
- W2331065727 modified "2023-09-23" @default.
- W2331065727 title "The Effects of Turbulence Modelings on CFD Simulations of S76 Hovering Rotor" @default.
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- W2331065727 doi "https://doi.org/10.2514/6.2015-1245" @default.
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