Generating turbulence using passive grids in wind tunnel testing

Giulio Vita; Hassan Hemida; Thomas Andrianne; Charalampos Baniotopoulos

Generating turbulence using passive grids in wind tunnel testing

Giulio Vita, Hassan Hemida, Thomas Andrianne, Charalampos Baniotopoulos

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

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Abstract

This paper reports on a wind tunnel experiment on a wind turbine aerofoil under turbulent inlet. Urban Wind Energy is considered as a promising way of harvesting wind energy in built areas, hence slashing infrastructural wind energy costs. Effective positioning strategies are needed to maximise the performance; however, the role of turbulent inflows is not clear. In particular, the role of turbulent length scales is difficult to assess. In this work, the DU96w180 wind turbine aerofoil is investigated regarding its aerodynamic performance under varying inflow turbulence structures. Particular attention is given to the stall mechanism, hence the angle of attack of the blade is varied accordingly "0<α<45deg" . Inlet turbulence is created by means of passive grids, with various geometrical setup, in order to obtain a wide range of turbulent structures. In order to test the effect of large scales, two chord length for the model are chosen "c=0.125÷0.025m" in order to maximise the length-to-chord ratio L/c.

Original language	English
Title of host publication	Proceedings 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	348-352
Number of pages	5
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

ASJC Scopus subject areas

Renewable Energy, Sustainability and the Environment
Civil and Structural Engineering

UN SDGs

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

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Giulio_Vita_et_al_Generating_turbulence_using_passive_grids_in_wind_tunnel_testing_WINERCOST'17_2017
Checked for eligibility: 28/03/2019
Accepted author manuscript, 338 KBLicence: None: All rights reserved

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Vita, G., Hemida, H., Andrianne, T., & Baniotopoulos, C. (2017). Generating turbulence using passive grids in wind tunnel testing. 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.), Proceedings of WINERCOST'17 - The International Conference on Wind Energy Harvesting 2017 (pp. 348-352). WINERCOST.

Vita, Giulio ; Hemida, Hassan ; Andrianne, Thomas ; Baniotopoulos, Charalampos. / Generating turbulence using passive grids in wind tunnel testing. Proceedings 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. 348-352

@inproceedings{8f256425dca24f2e9c1038ea7a1cefb7,

title = "Generating turbulence using passive grids in wind tunnel testing",

abstract = "This paper reports on a wind tunnel experiment on a wind turbine aerofoil under turbulent inlet. Urban Wind Energy is considered as a promising way of harvesting wind energy in built areas, hence slashing infrastructural wind energy costs. Effective positioning strategies are needed to maximise the performance; however, the role of turbulent inflows is not clear. In particular, the role of turbulent length scales is difficult to assess. In this work, the DU96w180 wind turbine aerofoil is investigated regarding its aerodynamic performance under varying inflow turbulence structures. Particular attention is given to the stall mechanism, hence the angle of attack of the blade is varied accordingly {"}0<α<45deg{"} . Inlet turbulence is created by means of passive grids, with various geometrical setup, in order to obtain a wide range of turbulent structures. In order to test the effect of large scales, two chord length for the model are chosen {"}c=0.125÷0.025m{"} in order to maximise the length-to-chord ratio L/c.",

author = "Giulio Vita and Hassan Hemida and Thomas Andrianne and Charalampos Baniotopoulos",

year = "2017",

month = apr,

day = "20",

language = "English",

isbn = "978‐989‐99226‐4‐8",

pages = "348--352",

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

booktitle = "Proceedings 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, Hemida, H, Andrianne, T & Baniotopoulos, C 2017, Generating turbulence using passive grids in wind tunnel testing. 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), Proceedings of WINERCOST'17 - The International Conference on Wind Energy Harvesting 2017. WINERCOST, Coimbra, PT, pp. 348-352, WINERCOST’17 International Conference on Wind Energy Harvesting, Coimbra, Portugal, 20/04/17.

Generating turbulence using passive grids in wind tunnel testing. / Vita, Giulio; Hemida, Hassan; Andrianne, Thomas; Baniotopoulos, Charalampos.

Proceedings 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. 348-352.

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

TY - GEN

T1 - Generating turbulence using passive grids in wind tunnel testing

AU - Vita, Giulio

AU - Hemida, Hassan

AU - Andrianne, Thomas

AU - Baniotopoulos, Charalampos

PY - 2017/4/20

Y1 - 2017/4/20

N2 - This paper reports on a wind tunnel experiment on a wind turbine aerofoil under turbulent inlet. Urban Wind Energy is considered as a promising way of harvesting wind energy in built areas, hence slashing infrastructural wind energy costs. Effective positioning strategies are needed to maximise the performance; however, the role of turbulent inflows is not clear. In particular, the role of turbulent length scales is difficult to assess. In this work, the DU96w180 wind turbine aerofoil is investigated regarding its aerodynamic performance under varying inflow turbulence structures. Particular attention is given to the stall mechanism, hence the angle of attack of the blade is varied accordingly "0<α<45deg" . Inlet turbulence is created by means of passive grids, with various geometrical setup, in order to obtain a wide range of turbulent structures. In order to test the effect of large scales, two chord length for the model are chosen "c=0.125÷0.025m" in order to maximise the length-to-chord ratio L/c.

AB - This paper reports on a wind tunnel experiment on a wind turbine aerofoil under turbulent inlet. Urban Wind Energy is considered as a promising way of harvesting wind energy in built areas, hence slashing infrastructural wind energy costs. Effective positioning strategies are needed to maximise the performance; however, the role of turbulent inflows is not clear. In particular, the role of turbulent length scales is difficult to assess. In this work, the DU96w180 wind turbine aerofoil is investigated regarding its aerodynamic performance under varying inflow turbulence structures. Particular attention is given to the stall mechanism, hence the angle of attack of the blade is varied accordingly "0<α<45deg" . Inlet turbulence is created by means of passive grids, with various geometrical setup, in order to obtain a wide range of turbulent structures. In order to test the effect of large scales, two chord length for the model are chosen "c=0.125÷0.025m" in order to maximise the length-to-chord ratio L/c.

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

M3 - Conference contribution

SN - 978‐989‐99226‐4‐8

SP - 348

EP - 352

BT - Proceedings of WINERCOST'17 - The International Conference on Wind Energy Harvesting 2017

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.

PB - WINERCOST

CY - Coimbra, PT

T2 - WINERCOST’17 International Conference on Wind Energy Harvesting

Y2 - 20 April 2017 through 21 April 2017

ER -

Vita G, Hemida H, Andrianne T, Baniotopoulos C. Generating turbulence using passive grids in wind tunnel testing. 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, Proceedings of WINERCOST'17 - The International Conference on Wind Energy Harvesting 2017. Coimbra, PT: WINERCOST. 2017. p. 348-352

Generating turbulence using passive grids in wind tunnel testing

Abstract

Conference

ASJC Scopus subject areas

UN SDGs

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