Rotor Computations with Active Gurney Flaps

  • M. A. Woodgate
  • V. A. Pastrikakis
  • G. N. BarakosEmail author
Conference paper
Part of the Notes on Numerical Fluid Mechanics and Multidisciplinary Design book series (NNFM, volume 133)


This paper builds on the Helicopter Multi-Block CFD solver of the University of Liverpool and demonstrates the implementation and use of Gurney flaps on wings, and rotors. The idea is to flag any cell face within the computational mesh with a solid, no slip boundary condition. Hence the infinitely thin Gurney can be approximated by “blocking cells” in the mesh. Comparison between thick Gurney flaps and infinitely thin Gurneys showed no difference on the integrated loads, the same flow structure was captured and the same vortices were identified ahead and behind the Gurney. The results presented for various test cases suggest that the method is simple and efficient and it can therefore be used for routine analysis of rotors with Gurney flaps. Moreover, the current method adds to the flexibility of the solver since no special grids are required and Gurney flaps can be easily implemented. Simple aerofoils, wings, and rotors in hover and forward flight were tested with fixed, linearly actuated, and swinging Gurneys, and the ability of the code to deploy a Gurney flap within the multiblock mesh is highlighted. The need for experimental data suitable for validation of CFD methods for cases of rotors with Gurney flaps is also highlighted.


Rotor Blade Suction Side Pitching Moment Cell Face Forward Flight 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.



The financial support of AgustaWestland and the Business Innovation and Skills Department of UK (projects RTVP and REACT) is gratefully acknowledged. This research was also supported in part by the Academic Supercomputing Centre TASK, Gdansk, Poland, via IMESCON project.


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Copyright information

© Springer International Publishing Switzerland 2016

Authors and Affiliations

  • M. A. Woodgate
    • 1
  • V. A. Pastrikakis
    • 1
  • G. N. Barakos
    • 1
    • 2
    Email author
  1. 1.CFD Laboratory, School of EngineeringUniversity of LiverpoolLiverpoolUK
  2. 2.School of EngineeringUniversity of GlasgowGlasgowUK

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