Experimental and numerical investigation of the effects of passive vortex generators on Aludra UAV performance

Tan Kar Zhen, Muhammed Zubair, Kamarul Arifin Ahmad

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

A study of the effects of passive vortex generators (VGs) on Aludra unmanned aerial vehicle (UAV) aerodynamic characteristics is presented. Both experimental and numerical works are carried out where an array of VGs is attached on Aludra UAV's wing. The flow measurements are made at various angles of attack by using 3-axis component balance system. In the numerical investigation, the Reynolds-averaged Navier-Stokes (RANS) code FLUENT 6.3™ is used in the simulations with fully structured mesh with Spalart-Allmaras (S-A) turbulence model and standard wall function. The comparison between the experimental and numerical results reveals a satisfactory agreement. The parametric study shows that higher maximum lift coefficient is achieved when the VGs are placed nearer to the separation point. In addition to this, shorter spanwise distance between the VGs also increases the maximum lift coefficient, rectangular and curve-edge VG performs better than triangular VG.

Original languageEnglish
Pages (from-to)577-583
Number of pages7
JournalChinese Journal of Aeronautics
Volume24
Issue number5
DOIs
Publication statusPublished - 10-2011

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Vehicle performance
Unmanned aerial vehicles (UAV)
Vortex flow
Gas generators
Wall function
Flow measurement
Angle of attack
Turbulence models
Aerodynamics

All Science Journal Classification (ASJC) codes

  • Aerospace Engineering
  • Mechanical Engineering

Cite this

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abstract = "A study of the effects of passive vortex generators (VGs) on Aludra unmanned aerial vehicle (UAV) aerodynamic characteristics is presented. Both experimental and numerical works are carried out where an array of VGs is attached on Aludra UAV's wing. The flow measurements are made at various angles of attack by using 3-axis component balance system. In the numerical investigation, the Reynolds-averaged Navier-Stokes (RANS) code FLUENT 6.3™ is used in the simulations with fully structured mesh with Spalart-Allmaras (S-A) turbulence model and standard wall function. The comparison between the experimental and numerical results reveals a satisfactory agreement. The parametric study shows that higher maximum lift coefficient is achieved when the VGs are placed nearer to the separation point. In addition to this, shorter spanwise distance between the VGs also increases the maximum lift coefficient, rectangular and curve-edge VG performs better than triangular VG.",
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Experimental and numerical investigation of the effects of passive vortex generators on Aludra UAV performance. / Zhen, Tan Kar; Zubair, Muhammed; Ahmad, Kamarul Arifin.

In: Chinese Journal of Aeronautics, Vol. 24, No. 5, 10.2011, p. 577-583.

Research output: Contribution to journalArticle

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