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Modes of Pressure Fluctuations Around a Leading-Edge Slat

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Fluid-Structure-Sound Interactions and Control

Part of the book series: Lecture Notes in Mechanical Engineering ((LNME))

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Abstract

Numerical simulations were conducted to investigate the pressure fluctuations (PF) around a leading-edge slat, which was assumed to have close relationship with the far-field slat noise. The PF predicted that not only the reattachment region of the free shear layer shedding from the slat cusp, but the region close to the leading edge of main element were the crucial regions that radiated noise into far field. Proper orthogonal decomposition (POD) was applied to the PF around the slat. By checking the temporal sequence of vorticity distribution around the slat, the crucial flow features corresponding to the first four POD modes were examined, in particular the first mode was induced by the vortical structures convecting through the slat gap.

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Author information

Authors and Affiliations

  1. China Aerodynamics Research and Development Center, Mianyang, China

    Peng Chen, Xunnian Wang & Yuchang Wen

Authors
  1. Peng Chen
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  2. Xunnian Wang
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  3. Yuchang Wen
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Corresponding author

Correspondence to Peng Chen .

Editor information

Editors and Affiliations

  1. The Hong Kong Polytechnic University, Hong Kong, People's Republic of China

    Yu Zhou

  2. The Hong Kong Polytechnic University, Hong Kong, People's Republic of China

    Yang Liu

  3. The University of Hong Kong, Hong Kong, People's Republic of China

    Lixi Huang

  4. Georgia Institute of Technology, Atlanta, Georgia, USA

    Dewey H. Hodges

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© 2014 Springer-Verlag Berlin Heidelberg

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Cite this paper

Chen, P., Wang, X., Wen, Y. (2014). Modes of Pressure Fluctuations Around a Leading-Edge Slat. In: Zhou, Y., Liu, Y., Huang, L., Hodges, D. (eds) Fluid-Structure-Sound Interactions and Control. Lecture Notes in Mechanical Engineering. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-40371-2_32

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  • DOI: https://doi.org/10.1007/978-3-642-40371-2_32

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  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-642-40370-5

  • Online ISBN: 978-3-642-40371-2

  • eBook Packages: EngineeringEngineering (R0)

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