About the features of flapping flight

V. D. Kotelkin; Котелкин В. Д.

doi:10.31857/S0032823524060022

About the features of flapping flight

Authors: Kotelkin V.D.¹
Affiliations:
1. Lomonosov Moscow State University
Issue: Vol 88, No 6 (2024)
Pages: 839-852
Section: Articles
URL: https://journals.eco-vector.com/0032-8235/article/view/678437
DOI: https://doi.org/10.31857/S0032823524060022
EDN: https://elibrary.ru/IHBNZS
ID: 678437

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Abstract

2D modeling of flapping flight is performed using DNS equations, the wing is simulated by an ensemble of Lagrangian particles. The simulation is carried out in two planes – parallel and orthogonal to the flight direction. The Golubev vortex street, which creates thrust, is reproduced; the meaning of figure-of-eight kinematics is clarified; it is shown that the vortices induced by the wing stroke eliminate the flow separation. It has been established that the use of folding wings reduces the energy consumption of birds by three times. The aerodynamics of a cyclocopter model with hybrid kinematics has been studied.

Keywords

flapping flight, viscous fluid, continuous flow, Navier–Stokes equations, vortices, numerical modeling, thrust force, lift force, figure-of-eight kinematics, cyclocopter

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About the authors

V. D. Kotelkin

Lomonosov Moscow State University

Author for correspondence.
Email: kotelkin@mech.math.msu.su
Russian Federation, Moscow

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