Ground-induced lift enhancement in a tandem of symmetric flapping wings: Lattice Boltzmann-immersed boundary simulations

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Abstract

The behavior of a tandem of symmetric flapping wings immersed in a quiescent viscous fluid is numerically dissected. The attention focuses on the effect on the flight performance of a solid surface which idealizes the presence of the ground. A wide numerical campaign is carried out. The author demonstrates that the presence of a solid surface can drastically modify the lift force, thus giving a remarkable advantage for the vertical take-off. Therefore, a proper governing parameter is proposed, which accounts for the ratio between the initial gap from the solid surface and the length of the wing.

Original languageEnglish
Pages (from-to)230-238
Number of pages9
JournalComputers and Structures
Volume153
DOIs
Publication statusPublished - 1 Jun 2015

Keywords

  • Boltzmann method
  • Flapping wings
  • Fluid-structure interaction
  • Immersed boundary
  • Lattice

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