Wind turbine aerofoils: a mesh dependency study

Giulio Vita; Yakut Cansev Kucukosman; Hassan Hemida; Christophe Schram; Jeroen Van Beeck; Charalampos Baniotopoulos

Wind turbine aerofoils: a mesh dependency study

Giulio Vita
, Yakut Cansev Kucukosman
, Hassan Hemida
, Christophe Schram (Contributor)
, Jeroen Van Beeck (Contributor)
, Charalampos Baniotopoulos

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

96 Downloads (Pure)

Abstract

A large eddy simulation (LES) study of the flow pattern around a typical wind turbine aerofoil sections is performed. The DU-96-180 is investigated in attached and nearly-stalled conditions ("4-20" deg of angle of attack) with two ranges for the Reynolds number (Re"=1.50×" 〖"10" 〗 "5" "÷1.13x" 〖"10" 〗 "6" ). The resulting flow pattern is then compared and validated with available results from the literature.

This configuration has been chosen, because it is a challenging setup to be modelled with accuracy using Reynolds Averaged Navier–Stokes (RANS) technique. Also mesh requirements and transitional behavior constitute a complexity for Large Eddy Simulation (LES), which usually requires large grids and small time-steps. The behaviour of an aerofoil near stall is characterized by the formation of a laminar separation bubble (LSB), which triggers transition or separation due to the adverse pressure gradient which is present because of the enhanced angle of attack "α" .

In this study the alternative wall-modelled LES (WM-LES) approach is implemented as an alternative to the traditional wall-resolved LES (WR-LES): the two approaches will be using the Smagorinsky technique with vanDriest damping at the wall.

The purpose is to optimize the grid requirements towards a more cost-effective simulation, without losing accuracy.

Original language	English
Title of host publication	Proceeding of WINERCOST'17 - The International Conference on Wind energy Harvesting 2017
Editors	C. Baniotopoulos, C. Rebelo , L. Simões da Silva , C. Borri , B. Blocken , H. Hemida, M. Veljkovic , T. Morbiato , R. P. Borg , S. Huber , E. Efthymiou
Place of Publication	Coimbra, PT
Publisher	WINERCOST
Pages	344-347
Number of pages	4
ISBN (Electronic)	978‐989‐99226‐5‐5
ISBN (Print)	978‐989‐99226‐4‐8
Publication status	Published - 20 Apr 2017
Event	WINERCOST’17 International Conference on Wind Energy Harvesting - University of Coimbra, Coimbra, Portugal Duration: 20 Apr 2017 → 21 Apr 2017

Conference

Conference	WINERCOST’17 International Conference on Wind Energy Harvesting
Abbreviated title	WINERCOST’17
Country/Territory	Portugal
City	Coimbra
Period	20/04/17 → 21/04/17

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy

ASJC Scopus subject areas

Renewable Energy, Sustainability and the Environment
Civil and Structural Engineering

Access to Document

Giulio_Vita_et_al_Wind_turbine_aerofoils_WINERCOST'17_2017
Checked for eligibility: 27/03/2019
Accepted author manuscript, 403 KBLicence: None: All rights reserved

Cite this

Vita, G., Kucukosman, Y. C., Hemida, H., Schram, C., Van Beeck, J., & Baniotopoulos, C. (2017). Wind turbine aerofoils: a mesh dependency study. In C. Baniotopoulos, C. Rebelo , L. Simões da Silva , C. Borri , B. Blocken , H. Hemida, M. Veljkovic , T. Morbiato , R. P. Borg , S. Huber , & E. Efthymiou (Eds.), Proceeding of WINERCOST'17 - The International Conference on Wind energy Harvesting 2017 (pp. 344-347). WINERCOST.

Vita, Giulio ; Kucukosman, Yakut Cansev ; Hemida, Hassan et al. / Wind turbine aerofoils : a mesh dependency study. Proceeding of WINERCOST'17 - The International Conference on Wind energy Harvesting 2017. editor / C. Baniotopoulos ; C. Rebelo ; L. Simões da Silva ; C. Borri ; B. Blocken ; H. Hemida ; M. Veljkovic ; T. Morbiato ; R. P. Borg ; S. Huber ; E. Efthymiou . Coimbra, PT : WINERCOST, 2017. pp. 344-347

@inproceedings{9a5eeb3921dd4040a3b57c6953dd80f5,

title = "Wind turbine aerofoils: a mesh dependency study",

abstract = "A large eddy simulation (LES) study of the flow pattern around a typical wind turbine aerofoil sections is performed. The DU-96-180 is investigated in attached and nearly-stalled conditions ({"}4-20{"} deg of angle of attack) with two ranges for the Reynolds number (Re{"}=1.50×{"} 〖{"}10{"} 〗 {"}5{"} {"}÷1.13x{"} 〖{"}10{"} 〗 {"}6{"} ). The resulting flow pattern is then compared and validated with available results from the literature. This configuration has been chosen, because it is a challenging setup to be modelled with accuracy using Reynolds Averaged Navier–Stokes (RANS) technique. Also mesh requirements and transitional behavior constitute a complexity for Large Eddy Simulation (LES), which usually requires large grids and small time-steps. The behaviour of an aerofoil near stall is characterized by the formation of a laminar separation bubble (LSB), which triggers transition or separation due to the adverse pressure gradient which is present because of the enhanced angle of attack {"}α{"} . In this study the alternative wall-modelled LES (WM-LES) approach is implemented as an alternative to the traditional wall-resolved LES (WR-LES): the two approaches will be using the Smagorinsky technique with vanDriest damping at the wall. The purpose is to optimize the grid requirements towards a more cost-effective simulation, without losing accuracy. ",

author = "Giulio Vita and Kucukosman, \{Yakut Cansev\} and Hassan Hemida and Christophe Schram and \{Van Beeck\}, Jeroen and Charalampos Baniotopoulos",

year = "2017",

month = apr,

day = "20",

language = "English",

isbn = "978‐989‐99226‐4‐8 ",

pages = "344--347",

editor = "C. Baniotopoulos and \{Rebelo \}, C. and \{Sim{\~o}es da Silva \}, L. and \{Borri \}, C. and \{Blocken \}, B. and H. Hemida and \{Veljkovic \}, M. and \{Morbiato \}, T. and \{Borg \}, \{R. P.\} and \{Huber \}, S. and \{Efthymiou \}, E.",

booktitle = "Proceeding of WINERCOST'17 - The International Conference on Wind energy Harvesting 2017",

publisher = " WINERCOST",

note = "WINERCOST{\textquoteright}17 International Conference on Wind Energy Harvesting, WINERCOST{\textquoteright}17 ; Conference date: 20-04-2017 Through 21-04-2017",

}

Vita, G, Kucukosman, YC, Hemida, H, Schram, C, Van Beeck, J & Baniotopoulos, C 2017, Wind turbine aerofoils: a mesh dependency study. in C Baniotopoulos, C Rebelo , L Simões da Silva , C Borri , B Blocken , H Hemida, M Veljkovic , T Morbiato , RP Borg , S Huber & E Efthymiou (eds), Proceeding of WINERCOST'17 - The International Conference on Wind energy Harvesting 2017. WINERCOST, Coimbra, PT, pp. 344-347, WINERCOST’17 International Conference on Wind Energy Harvesting, Coimbra, Portugal, 20/04/17.

Wind turbine aerofoils: a mesh dependency study. / Vita, Giulio; Kucukosman, Yakut Cansev; Hemida, Hassan et al.
Proceeding of WINERCOST'17 - The International Conference on Wind energy Harvesting 2017. ed. / C. Baniotopoulos; C. Rebelo ; L. Simões da Silva ; C. Borri ; B. Blocken ; H. Hemida; M. Veljkovic ; T. Morbiato ; R. P. Borg ; S. Huber ; E. Efthymiou . Coimbra, PT: WINERCOST, 2017. p. 344-347.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

TY - GEN

T1 - Wind turbine aerofoils

T2 - WINERCOST’17 International Conference on Wind Energy Harvesting

AU - Vita, Giulio

AU - Kucukosman, Yakut Cansev

AU - Hemida, Hassan

AU - Baniotopoulos, Charalampos

A2 - Schram, Christophe

A2 - Van Beeck, Jeroen

A2 - Baniotopoulos, C.

A2 - Rebelo , C.

A2 - Simões da Silva , L.

A2 - Borri , C.

A2 - Blocken , B.

A2 - Hemida, H.

A2 - Veljkovic , M.

A2 - Morbiato , T.

A2 - Borg , R. P.

A2 - Huber , S.

A2 - Efthymiou , E.

PY - 2017/4/20

Y1 - 2017/4/20

N2 - A large eddy simulation (LES) study of the flow pattern around a typical wind turbine aerofoil sections is performed. The DU-96-180 is investigated in attached and nearly-stalled conditions ("4-20" deg of angle of attack) with two ranges for the Reynolds number (Re"=1.50×" 〖"10" 〗 "5" "÷1.13x" 〖"10" 〗 "6" ). The resulting flow pattern is then compared and validated with available results from the literature. This configuration has been chosen, because it is a challenging setup to be modelled with accuracy using Reynolds Averaged Navier–Stokes (RANS) technique. Also mesh requirements and transitional behavior constitute a complexity for Large Eddy Simulation (LES), which usually requires large grids and small time-steps. The behaviour of an aerofoil near stall is characterized by the formation of a laminar separation bubble (LSB), which triggers transition or separation due to the adverse pressure gradient which is present because of the enhanced angle of attack "α" . In this study the alternative wall-modelled LES (WM-LES) approach is implemented as an alternative to the traditional wall-resolved LES (WR-LES): the two approaches will be using the Smagorinsky technique with vanDriest damping at the wall. The purpose is to optimize the grid requirements towards a more cost-effective simulation, without losing accuracy.

AB - A large eddy simulation (LES) study of the flow pattern around a typical wind turbine aerofoil sections is performed. The DU-96-180 is investigated in attached and nearly-stalled conditions ("4-20" deg of angle of attack) with two ranges for the Reynolds number (Re"=1.50×" 〖"10" 〗 "5" "÷1.13x" 〖"10" 〗 "6" ). The resulting flow pattern is then compared and validated with available results from the literature. This configuration has been chosen, because it is a challenging setup to be modelled with accuracy using Reynolds Averaged Navier–Stokes (RANS) technique. Also mesh requirements and transitional behavior constitute a complexity for Large Eddy Simulation (LES), which usually requires large grids and small time-steps. The behaviour of an aerofoil near stall is characterized by the formation of a laminar separation bubble (LSB), which triggers transition or separation due to the adverse pressure gradient which is present because of the enhanced angle of attack "α" . In this study the alternative wall-modelled LES (WM-LES) approach is implemented as an alternative to the traditional wall-resolved LES (WR-LES): the two approaches will be using the Smagorinsky technique with vanDriest damping at the wall. The purpose is to optimize the grid requirements towards a more cost-effective simulation, without losing accuracy.

UR - http://winercost.com/cost_files/WINERCOST17_Proceedings_Book.pdf

M3 - Conference contribution

SN - 978‐989‐99226‐4‐8

SP - 344

EP - 347

BT - Proceeding of WINERCOST'17 - The International Conference on Wind energy Harvesting 2017

PB - WINERCOST

CY - Coimbra, PT

Y2 - 20 April 2017 through 21 April 2017

ER -

Vita G, Kucukosman YC, Hemida H, Schram C, Van Beeck J, Baniotopoulos C. Wind turbine aerofoils: a mesh dependency study. In Baniotopoulos C, Rebelo C, Simões da Silva L, Borri C, Blocken B, Hemida H, Veljkovic M, Morbiato T, Borg RP, Huber S, Efthymiou E, editors, Proceeding of WINERCOST'17 - The International Conference on Wind energy Harvesting 2017. Coimbra, PT: WINERCOST. 2017. p. 344-347

Wind turbine aerofoils: a mesh dependency study

Abstract

Conference

UN SDGs

ASJC Scopus subject areas

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