The Passive Separation Control of an Airfoil Using Self-adaptive Hairy Flaps

Chunlin Gong; Zhe Fang; Gang Chen; Alistair Revell; Adrian Harwood; Joseph O’Connor

doi:10.1007/978-3-030-55594-8_38

The Passive Separation Control of an Airfoil Using Self-adaptive Hairy Flaps

Chunlin Gong^*, Zhe Fang, Gang Chen, Alistair Revell, Adrian Harwood, Joseph O’Connor

^*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceeding › Chapter › peer-review

Abstract

In recent years, researchers have found that separation control could increase the mean lift, decrease the drag, delay stall, reduce noise and influence the transition to turbulence, which has a significant economic and ecological impact on society, and it has been used extensively in the design of unmanned aerial vehicles (UAVs) and micro aerial vehicles (MAVs), which operate at low Reynolds numbers. In this paper, the passive separation control of a NACA0012 airfoil at Reynolds number Re = 1000 using self-adaptive hairy flap is investigated. The fluid motion is obtained by solving the discrete lattice Boltzmann equation, the dynamics of the flaps are calculated by the finite element method (FEM), and the coupling of flap dynamics and flow dynamics is handled by the immersed boundary method (IBM). Aerodynamic performance is quantified by the mean drag and mean lift of the NACA0012 airfoil. The influence of the flap parameters (quantity, length, rigidity and position) on the aerodynamic performance is investigated and a mean drag reduction and lift increment under a certain circumstance are observed.

Original language	English
Title of host publication	Notes on Numerical Fluid Mechanics and Multidisciplinary Design
Publisher	Springer Nature
Pages	467-478
Number of pages	12
DOIs	https://doi.org/10.1007/978-3-030-55594-8_38
Publication status	Published - 2021

Publication series

Name	Notes on Numerical Fluid Mechanics and Multidisciplinary Design
Volume	147
ISSN (Print)	1612-2909
ISSN (Electronic)	1860-0824

Keywords

Finite element method
Immersed boundary
Lattice Boltzmann
Passive separation control

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10.1007/978-3-030-55594-8_38

Cite this

Gong, C., Fang, Z., Chen, G., Revell, A., Harwood, A., & O’Connor, J. (2021). The Passive Separation Control of an Airfoil Using Self-adaptive Hairy Flaps. In Notes on Numerical Fluid Mechanics and Multidisciplinary Design (pp. 467-478). (Notes on Numerical Fluid Mechanics and Multidisciplinary Design; Vol. 147). Springer Nature. https://doi.org/10.1007/978-3-030-55594-8_38

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The Passive Separation Control of an Airfoil Using Self-adaptive Hairy Flaps. / Gong, Chunlin; Fang, Zhe; Chen, Gang et al.
Notes on Numerical Fluid Mechanics and Multidisciplinary Design. Springer Nature, 2021. p. 467-478 (Notes on Numerical Fluid Mechanics and Multidisciplinary Design; Vol. 147).

Research output: Chapter in Book/Report/Conference proceeding › Chapter › peer-review

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The Passive Separation Control of an Airfoil Using Self-adaptive Hairy Flaps

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