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Instability and Control of Massively Separated Flows pp 229–234Cite as

Vortex Filament and Global Instability Analysis of the Crow Mode

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Part of the book series: Fluid Mechanics and Its Applications ((FMIA,volume 107))

Abstract

Aircraft trailing vortices and their wakes are important to understand in order to shorten the minimum aircraft distances for safe operation in commercial flights. The mechanisms of wake destruction are studied by predictions by both inviscid vortex filament and viscous BiGlobal instability analyses. The two methods have already been applied to the wake problem, but a more detailed comparison is carried out here. The results show excellent agreement between the two methodologies predicting the long wave symmetric instability of a counter-rotating pair of vortices, namely the Crow instability, even at low Reynolds numbers.

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Notes

  1. 1.

    There exist several cases where viscosity is added to filament methods applied to evolution problems, but its introduction to eigenvalue problems is still an open issue.

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Acknowledgments

Discussions with Dr. J. D. Crouch and Mr. S. Benton regarding the role of the cutoff distance and other aspects are gratefully acknowledged. Support of the Marie Curie Grant PIRSES-GA-2009-247651 “FP7-PEOPLE-IRSES: ICOMASEF—Instability and Control of Massively Separated Flows” as well as from the Plan Nacional Grant TRA2009-13648 “Metodologías Computacionales para la Predicción de Inestabilidades Globales Hidrodinámicas y Aeroacústicas en Flujos Complejos” are gratefully acknowledged.

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Authors and Affiliations

  1. School of Aeronautics, Universidad Politécnica de Madrid, Pza. Cardenal Cisneros 3, 28040, Madrid, Spain

    Juan Ángel Tendero, Pedro Paredes & Vassilios Theofilis

  2. Gamesa Innovation and Technology S.L., Calle Ramírez de Arellano, 37, 28043, Madrid, Spain

    Miquel Roura

  3. TIFR Centre for Interdisciplinary Sciences, 21, Brundavan Colony, Narsingi, Hyderabad, 500075, India

    Rama Govindarajan

Authors
  1. Juan Ángel Tendero
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  2. Pedro Paredes
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  3. Miquel Roura
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  4. Rama Govindarajan
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  5. Vassilios Theofilis
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Corresponding author

Correspondence to Juan Ángel Tendero .

Editor information

Editors and Affiliations

  1. School of Aerospace Engineering, Technical University of Madrid, Madrid, Spain

    Vassilis Theofilis

  2. Department of Mechanical and Aerospace Engineering, Monash University, Melbourne, VIC, Australia, and Department of Aeronautical Engineering, King Abdulaziz University, Jeddah, Saudi Arabia

    Julio Soria

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Tendero, J.Á., Paredes, P., Roura, M., Govindarajan, R., Theofilis, V. (2015). Vortex Filament and Global Instability Analysis of the Crow Mode. In: Theofilis, V., Soria, J. (eds) Instability and Control of Massively Separated Flows. Fluid Mechanics and Its Applications, vol 107. Springer, Cham. https://doi.org/10.1007/978-3-319-06260-0_34

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  • DOI: https://doi.org/10.1007/978-3-319-06260-0_34

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  • Publisher Name: Springer, Cham

  • Print ISBN: 978-3-319-06259-4

  • Online ISBN: 978-3-319-06260-0

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