Comparison of data correction methods for blockage effects in semispan wing model testing

Wing alone models are usually tested in wind tunnels for aerospace applications like aircraft and hybrid buoyant aircraft. Raw data obtained from such testing is subject to different corrections such as wall interference, blockage, offset in angle of attack, dynamic pressure and free stream velocity...

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Main Authors:	UlHaque, Anwar, Asrar, Waqar, Omar, Ashraf Ali, Sulaeman, Erwin
Format:	Conference or Workshop Item
Language:	English English
Published:	EDP Sciences 2016
Subjects:	TK7800 Electronics. Computer engineering. Computer hardware. Photoelectronic devices TL Motor vehicles. Aeronautics. Astronautics
Online Access:	http://irep.iium.edu.my/58741/ http://irep.iium.edu.my/58741/ http://irep.iium.edu.my/58741/ http://irep.iium.edu.my/58741/1/58741_Comparison%20of%20data%20correction%20methods_complete.pdf http://irep.iium.edu.my/58741/2/58741_Comparison%20of%20data%20correction%20methods_scopus.pdf

id	iium-58741
recordtype	eprints
spelling	iium-587412017-10-22T00:00:27Z http://irep.iium.edu.my/58741/ Comparison of data correction methods for blockage effects in semispan wing model testing UlHaque, Anwar Asrar, Waqar Omar, Ashraf Ali Sulaeman, Erwin TK7800 Electronics. Computer engineering. Computer hardware. Photoelectronic devices TL Motor vehicles. Aeronautics. Astronautics Wing alone models are usually tested in wind tunnels for aerospace applications like aircraft and hybrid buoyant aircraft. Raw data obtained from such testing is subject to different corrections such as wall interference, blockage, offset in angle of attack, dynamic pressure and free stream velocity etc. Since the flow is constrained by wind tunnel walls, therefore special emphasis is required to deliberate the limitation of correction methods for blockage correction. In the present research work, different aspects of existing correction methods are explored with the help of an example of a straight semi-span wing. Based on the results of analytical relationships of standard methods, it was found that although multiple variables are involved in the standard methods for the estimation of blockage, they are based on linearized flow theory such as source sink method and potential flow assumption etc, which have intrinsic limitations. Based on the computed and estimated experimental results, it is recommended to obtain the corrections by adding the difference in results of solid walls and far-field condition in the wind tunnel data. Computational Fluid Dynamics technique is found to be useful to determine the correction factors for a wing installed at zero spacer height/gap, with and without the tunnel wall. EDP Sciences 2016-03-28 Conference or Workshop Item PeerReviewed application/pdf en http://irep.iium.edu.my/58741/1/58741_Comparison%20of%20data%20correction%20methods_complete.pdf application/pdf en http://irep.iium.edu.my/58741/2/58741_Comparison%20of%20data%20correction%20methods_scopus.pdf UlHaque, Anwar and Asrar, Waqar and Omar, Ashraf Ali and Sulaeman, Erwin (2016) Comparison of data correction methods for blockage effects in semispan wing model testing. In: "10th International Conference on Experimental Fluid Mechanics, EFM 2015", 17-20 November 2015, Kaserstejn PalacePrague; Czech Republic. https://www.epj-conferences.org/articles/epjconf/abs/2016/09/epjconf_efm2016_02129/epjconf_efm2016_02129.html 10.1051/epjconf/201611402129
repository_type	Digital Repository
institution_category	Local University
institution	International Islamic University Malaysia
building	IIUM Repository
collection	Online Access
language	English English
topic	TK7800 Electronics. Computer engineering. Computer hardware. Photoelectronic devices TL Motor vehicles. Aeronautics. Astronautics
spellingShingle	TK7800 Electronics. Computer engineering. Computer hardware. Photoelectronic devices TL Motor vehicles. Aeronautics. Astronautics UlHaque, Anwar Asrar, Waqar Omar, Ashraf Ali Sulaeman, Erwin Comparison of data correction methods for blockage effects in semispan wing model testing
description	Wing alone models are usually tested in wind tunnels for aerospace applications like aircraft and hybrid buoyant aircraft. Raw data obtained from such testing is subject to different corrections such as wall interference, blockage, offset in angle of attack, dynamic pressure and free stream velocity etc. Since the flow is constrained by wind tunnel walls, therefore special emphasis is required to deliberate the limitation of correction methods for blockage correction. In the present research work, different aspects of existing correction methods are explored with the help of an example of a straight semi-span wing. Based on the results of analytical relationships of standard methods, it was found that although multiple variables are involved in the standard methods for the estimation of blockage, they are based on linearized flow theory such as source sink method and potential flow assumption etc, which have intrinsic limitations. Based on the computed and estimated experimental results, it is recommended to obtain the corrections by adding the difference in results of solid walls and far-field condition in the wind tunnel data. Computational Fluid Dynamics technique is found to be useful to determine the correction factors for a wing installed at zero spacer height/gap, with and without the tunnel wall.
format	Conference or Workshop Item
author	UlHaque, Anwar Asrar, Waqar Omar, Ashraf Ali Sulaeman, Erwin
author_facet	UlHaque, Anwar Asrar, Waqar Omar, Ashraf Ali Sulaeman, Erwin
author_sort	UlHaque, Anwar
title	Comparison of data correction methods for blockage effects in semispan wing model testing
title_short	Comparison of data correction methods for blockage effects in semispan wing model testing
title_full	Comparison of data correction methods for blockage effects in semispan wing model testing
title_fullStr	Comparison of data correction methods for blockage effects in semispan wing model testing
title_full_unstemmed	Comparison of data correction methods for blockage effects in semispan wing model testing
title_sort	comparison of data correction methods for blockage effects in semispan wing model testing
publisher	EDP Sciences
publishDate	2016
url	http://irep.iium.edu.my/58741/ http://irep.iium.edu.my/58741/ http://irep.iium.edu.my/58741/ http://irep.iium.edu.my/58741/1/58741_Comparison%20of%20data%20correction%20methods_complete.pdf http://irep.iium.edu.my/58741/2/58741_Comparison%20of%20data%20correction%20methods_scopus.pdf
first_indexed	2023-09-18T21:23:06Z
last_indexed	2023-09-18T21:23:06Z
_version_	1777412012958023680

Comparison of data correction methods for blockage effects in semispan wing model testing

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