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Parametric Study of Cavity Leading-Edge Rod Spoilers by Advanced Hybrid RANS-LES Methods

  • Kunyu LuoEmail author
  • Zhixiang Xiao
  • Zhe Weng
  • Ning Zong
  • Lidong Deng
Conference paper
Part of the Notes on Numerical Fluid Mechanics and Multidisciplinary Design book series (NNFM, volume 137)

Abstract

Improved delayed detached-eddy simulation is performed to explore the control mechanism of the transverse rod spoiler near the leading-edge of an open-type cavity at Ma = 0.9. The rod induces vertical velocity and lifts up the shear layer, significantly reducing the pressure fluctuation inside the cavity. Rossiter peaks are damped and energy is redistributed to the high frequency components near the cavity leading-edge. Vortex shedding after the rod generates high frequency peaks. Then three rod spoilers of different diameters and gap distances are numerically evaluated and compared. A narrow gap between the rod and the wall tends to weaken the lifting-up of the shear layer. Large rod diameter enhances the lifting-up, but also generates excessive perturbation, which is also the case for the gap distance.

Notes

Acknowledgements

Investigations presented in this paper are supported by the National Natural Science Foundation of China (Grant No. 11372159), the Key Technologies R&D Program (Grant No. 2016YFA0401200) and the EU Horizon 2020 Research & Innovation Program IMAGE. The authors wish to thank the Tsinghua National Laboratory for Information Science and Technology for providing computation resources.

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Copyright information

© Springer International Publishing AG 2018

Authors and Affiliations

  • Kunyu Luo
    • 1
    Email author
  • Zhixiang Xiao
    • 1
  • Zhe Weng
    • 2
  • Ning Zong
    • 2
  • Lidong Deng
    • 2
  1. 1.School of Aerospace EngineeringTsinghua UniversityBeijingChina
  2. 2.AVIC Shenyang Aircraft Design & Research InstituteShenyangChina

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