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Simulation of Counter-Rotating Vortex Pairs on a Triangular-Flapped Wing with Flap-Tip Free Vortex Modeling

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Abstract

A triangular-flapped wing planform, which produced two counter-rotating vortex pairs, was simulated using the horseshoe vortex method (HVM). A modeling method using discrete horseshoe vortex elements was introduced to model the geometrical discontinuities of the flap-tip juncture. The flap-tip modeling method allows the four-vortex system generated behind the triangular-flapped wing configuration to be simulated accurately. When the model was not applied, a strong vortex was generated at the wing-flap corner. The wake behavior and rolling moment induced by the wake vortices were investigated and compared with a reference experiment. The results of the simulation indicate that the quantitative values of the rolling-moment parameter can be estimated as well as the wake behaviors, even great distances. Even though only macroscopic wake behaviors can be simulated, due to limitations regarding viscosity and diffusion effects, these results support the theory that the HVM can simulate the initial stage of the instability of wake vortices in the inviscid region.

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  • 24 October 2018

    The article “Simulation of Counter-Rotating Vortex Pairs on a Triangular-Flapped Wing with Flap-Tip Free Vortex Modeling”, written by Woo-Ram Kang, Se Hwan Park and Duck-Joo Lee, was originally published electronically on the publisher’s internet portal (currently SpringerLink) on 08 September 2018 with open access.

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Acknowledgements

This work was supported by the KEIT Research Grant of 2017 (10053155).

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Authors and Affiliations

  1. Department of Aerospace Engineering, Korea Advanced Institute of Science and Technology, Daejeon, 34141, Republic of Korea

    Woo-Ram Kang, Se Hwan Park & Duck-Joo Lee

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  1. Woo-Ram Kang
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  2. Se Hwan Park
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  3. Duck-Joo Lee
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Correspondence to Duck-Joo Lee.

Additional information

The original version of this article was revised: The article “Simulation of Counter-Rotating Vortex Pairs on a Triangular-Flapped Wing with Flap-Tip Free Vortex Modeling”, written by Woo-Ram Kang, Se Hwan Park and Duck-Joo Lee, was originally published electronically on the publisher’s internet portal (currently SpringerLink) on 08 September 2018 with open access. With the author(s)’ decision to step back from Open Choice, the copyright of the article changed on 24 October 2018 to © The Korean Society for Aeronautical & Space Sciences and Springer Nature Singapore Pte Ltd. 2018 and the article is forthwith distributed under the terms of copyright.

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Kang, WR., Park, S.H. & Lee, DJ. Simulation of Counter-Rotating Vortex Pairs on a Triangular-Flapped Wing with Flap-Tip Free Vortex Modeling. Int. J. Aeronaut. Space Sci. 19, 805–815 (2018). https://doi.org/10.1007/s42405-018-0075-6

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  • DOI: https://doi.org/10.1007/s42405-018-0075-6

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