"The effect of delta winglet inclination angle on the vortical flow dow" by Junguo Wang, David S.K. Ting et al.
 

Title

The effect of delta winglet inclination angle on the vortical flow downstream

Document Type

Conference Proceeding

Publication Date

1-1-2018

Publication Title

ASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE)

Volume

7

Abstract

The effect of the inclination angle of a delta winglet vortex generator with a length-to-height (c/h) ratio of 2, at 30 degrees with respect to an Re h = 9000 wind, on the resulting flow along a flat plate is quantified in a wind tunnel. The vortical flow characteristics at 13h downstream of the leading edge of the delta winglet are detailed with the help of a triple-hot-wire probe. Specifically, the local velocity, vortex shape, size and strength, turbulence intensity, integral length and Taylor microscale are deduced. The results show that the into-the-plate velocity in the inflow region increases, while the out-of-the-plate velocity in the outflow area decreases, with inclination angle. The 90-degree inclination angle appears to furnish higher values of turbulent intensity, integral length and Taylor microscale.

DOI

10.1115/IMECE201886331

ISBN

9780791852101

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