Validation of a Flow Simulation for a Helicopter Fuselage Including a Rotating Rotor Head
This work presents a detailed analysis of the aerodynamic characteristics for a helicopter fuselage including a skid-landing-gear and a rotating rotor head. Thereby, a special emphasis is set on the rotor head. The results are obtained through numerical simulations based on the incompressible URANS equations. The modelling of the rotating rotor head, including collective and cyclic pitch, is based on a sliding mesh interface in combination with mesh deformation. The numerical simulations are performed under the same conditions and at the same scale as for the existing wind tunnel data. Thus a detailed validation study based on the broad experimental data base could be performed. For this purpose the experimental data base was further extended by rotor phase locked stereo particle image velocimetry measurements.
KeywordsRotor aerodynamics Cyclic Sliding mesh Mesh deformation
The research leading to these results received funding from the European Community’s Seventh Framework Program (FP/2007-2013) for the Clean Sky Joint Technology Initiative under grant agreement number 270563. The authors would like to thank the project leader Eurocopter Deutschland GmbH for the fruitful collaboration and valuable support. Furthermore, special thanks are addressed to ANSYS CFX for providing the flow simulation software.
- 1.Organisations web page: www.cleansky.eu
- 2.Grawunder, M., Reß, R., Breitsamter, C., Adams, N.A.: Flow characteristics of a helicopter fuselage configuration including a rotating rotor head. In: 28th International Congress of the Aeronautical Sciences, Brisbane (2012)Google Scholar
- 3.Grawunder, M., Reß, R., Stein, V., Breitsamter, C., Adams, N.A.: Flow-simulation of a five-bladed rotor head. In: New Results in Numerical and Experimental Fluid Mechanics IX. Notes on Numerical Fluid Mechanics and Multidisciplinary Design, vol. 124, pp. 235–243 (2014)Google Scholar
- 4.Hill, M., Louis, M.: Rotating hub drag prediction methodology. In: American Helicopter Society Specialist’s Conference on Future Vertical Lift Aircraft Design, San Francisco (2012)Google Scholar
- 5.Grawunder, M., Reß, R., Breitsamter, C., Adams, N.A.: Optimised skid-landing-gear for twin-engine-light utility helicopter. In: 39th European Rotorcraft Forum, Moscow (2013)Google Scholar
- 6.Menter, F., Egorov, Y.: The scale-adaptive simulation method for unsteady turbulent flow predictions. Part 1: theory and model description. Flow Turbul. Combusion 85(1), 113–138 (2010)Google Scholar
- 7.Egorov, Y., Menter, F., Lechner, R., Cokljat, D.: The scale-adaptive simulation method for unsteady turbulent flow predictions. Part 2: application to complex flows. Flow Turbul. Combusion 85(1), 139–165 (2010)Google Scholar