URANS simulations of separated flow with stall cells over an NREL S826 airfoil

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Abstract

A series of wind tunnel measurements and oil flow visualization was recently carried out at the Technical University of Denmark in order to investigate flow characteristics over a 14% thick NREL S826 airfoil at low Reynolds numbers. This paper aims at presenting numerical simulations of the same airfoil using unsteady Reynolds-averaged Navier-Stokes (URANS) approach. Results of the simulations are demonstrated in terms of mean flow velocity, lift and drag, as well as pressure distribution, and validated against available experimental data. The simulations are carried out with a wide computational domain (with a span-to-chord ratio of 5) and it is illustrated that the URANS approach is capable of predicting 3D spanwise structures, known as stall cells.
Original languageEnglish
Article number030039
JournalAip Conference Proceedings
Volume1738
Number of pages5
ISSN0094-243X
DOIs
Publication statusPublished - 2016
Event13th International Conference of Numerical Analysis and Applied Mathematics 2015 (ICNAAM 2015) - Rhodes, Greece
Duration: 22 Sep 201528 Sep 2015
http://icnaam.org/

Conference

Conference13th International Conference of Numerical Analysis and Applied Mathematics 2015 (ICNAAM 2015)
LocationRhodes,
CountryGreece
Period22/09/201528/09/2015
Internet address

Keywords

  • Stall Cells
  • Mushroom Structures
  • Flow Visualization
  • URANS

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