Open Access
ARTICLE
Effects of Heaving Motion on the Aerodynamic Performance of a Double-Element Wing in Ground Effect
Ioannis Oxyzoglou*, Zheng-Tong Xie
Faculty of Engineering and Physical Sciences, University of Southampton, Southampton, SO17 1BJ, UK
* Corresponding Author: Ioannis Oxyzoglou. Email:
Fluid Dynamics & Materials Processing 2020, 16(6), 1093-1114. https://doi.org/10.32604/fdmp.2020.012237
Received 21 June 2020; Accepted 18 November 2020; Issue published 17 December 2020
Abstract
The broad implication of the paper is to elucidate the significance of the
dynamic heaving motion in the aerodynamic performance of multi-element
wings, currently considered as a promising aspect for the improvement of the
aerodynamic correlation between CFD, wind tunnel and track testing in race
car applications. The relationship between the varying aerodynamic forces, the
vortex shedding, and the unsteady pressure field of a heaving double-element
wing is investigated for a range of mean ride heights, frequencies, and amplitudes,
using a two-dimensional (2D) unsteady Reynolds-averaged Navier-Stokes
(URANS) approach and an overset mesh method for modelling the moving wing.
The analysis of the results shows that at high frequencies, i.e.,
k ≥ 5:94 and
amplitudes
a/c ≥ 0:05 the interaction of the shear vorticity between the two
elements results in the generation of cohering leading and trailing edge vortices
on the flap, associated to the rapid variation of thrust and downforce enhancement.
Both the occurrence and intensity of these vortices are dependent upon the frequency,
amplitude, and mean ride height of the heaving wing. The addition of the flap significantly alters the frequency of the shed vortices in the wake and maintains the generation of downforce for longer time in ground proximity. The comparison with the
static wing provides evidence that the dynamic motion of a race car wing can be beneficial in terms of performance, or detrimental in terms of aerodynamic correlation.
Keywords
Cite This Article
Oxyzoglou, I., Xie, Z. (2020). Effects of Heaving Motion on the Aerodynamic Performance of a Double-Element Wing in Ground Effect.
FDMP-Fluid Dynamics & Materials Processing, 16(6), 1093–1114.
Citations