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

Hamid Sarlak Chivaee; T. Nishino; Jens Nørkær Sørensen

doi:10.1063/1.4951795

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

Hamid Sarlak Chivaee, T. Nishino, Jens Nørkær Sørensen

Cranfield University

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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 language	English
Article number	030039
Journal	AIP Conference Proceedings
Volume	1738
Number of pages	5
ISSN	0094-243X
DOIs	https://doi.org/10.1063/1.4951795
Publication status	Published - 2016
Event	13th International Conference of Numerical Analysis and Applied Mathematics 2015 (ICNAAM 2015) - Rhodes, Greece Duration: 22 Sept 2015 → 28 Sept 2015 http://icnaam.org/

Conference

Conference	13th International Conference of Numerical Analysis and Applied Mathematics 2015 (ICNAAM 2015)
Location	Rhodes,
Country/Territory	Greece
Period	22/09/2015 → 28/09/2015
Internet address	http://icnaam.org/

Keywords

Stall Cells
Mushroom Structures
Flow Visualization
URANS

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title = "URANS simulations of separated flow with stall cells over an NREL S826 airfoil",

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.",

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language = "English",

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journal = "AIP Conference Proceedings",

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AU - Sarlak Chivaee, Hamid

AU - Nishino, T.

AU - Sørensen, Jens Nørkær

PY - 2016

Y1 - 2016

N2 - 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.

AB - 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.

KW - Stall Cells

KW - Mushroom Structures

KW - Flow Visualization

KW - URANS

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M3 - Journal article

SN - 0094-243X

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JO - AIP Conference Proceedings

JF - AIP Conference Proceedings

M1 - 030039

T2 - 13th International Conference of Numerical Analysis and Applied Mathematics 2015 (ICNAAM 2015)

Y2 - 22 September 2015 through 28 September 2015

ER -

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

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