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3D Effects in the Wake Vortex Formation of an Elliptic Flat Plate in Hover

[+] Author Affiliations
Vivek Nair, Siddarth Chintamani, B. H. Dennis

University of Texas, Arlington, TX

Paper No. IMECE2017-71692, pp. V001T03A027; 8 pages
doi:10.1115/IMECE2017-71692
From:
  • ASME 2017 International Mechanical Engineering Congress and Exposition
  • Volume 1: Advances in Aerospace Technology
  • Tampa, Florida, USA, November 3–9, 2017
  • Conference Sponsors: ASME
  • ISBN: 978-0-7918-5834-9
  • Copyright © 2017 by ASME

abstract

A Numerical Analysis is conducted to investigate the Leading Edge Vortex (LEV) dynamics of an elliptic flat plate undergoing 2 dimensional symmetric flapping motion in hover. The plate is modeled with an aspect ratio of 3 and a flapping trajectory resulting in Reynolds number 225 is studied. The leading edge vortex stability is analyzed as a function of the non dimensional formation number and a vorticity transport analysis is carried to understand the flux budgets present. The LEV formation number is found to be 2.6. The results of vorticity analysis show the highly three dimensional nature of the LEV growth for an elliptic geometry.

Copyright © 2017 by ASME

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