An Experimental Study on Aerodynamic Interaction Between a Boundary Layer Generated by a Smooth And Rough Wall and a Wake Behind a Spire

A wind tunnel experiment to assess the flow characteristics of the wake behind a spire mounted normal to the wind tunnel floor was conducted to clarify the interaction between the wake flow and the wall shear boundary layer. To reproduce the contrasting boundary layer depth, two types of walls—a smo...

Full description

Bibliographic Details
Main Authors:	Nurizzatul Athika, Rahmat, Hagishima, Aya, Ikegaya, Naoki, Tanimoto, Jun
Format:	Article
Language:	English English
Published:	Kyushu University 2016
Subjects:	TJ Mechanical engineering and machinery
Online Access:	http://umpir.ump.edu.my/id/eprint/13939/ http://umpir.ump.edu.my/id/eprint/13939/ http://umpir.ump.edu.my/id/eprint/13939/1/An%20experimental%20study%20on%20aerodynamic%20interaction%20between%20a%20boundary%20layer%20generated%20by%20a%20smooth%20and%20rough%20wall%20and%20a%20wake%20behind%20a%20spire.pdf http://umpir.ump.edu.my/id/eprint/13939/7/fkm-2016-experimental%20study.pdf

id	ump-13939
recordtype	eprints
spelling	ump-139392017-01-27T07:22:45Z http://umpir.ump.edu.my/id/eprint/13939/ An Experimental Study on Aerodynamic Interaction Between a Boundary Layer Generated by a Smooth And Rough Wall and a Wake Behind a Spire Nurizzatul Athika, Rahmat Hagishima, Aya Ikegaya, Naoki Tanimoto, Jun TJ Mechanical engineering and machinery A wind tunnel experiment to assess the flow characteristics of the wake behind a spire mounted normal to the wind tunnel floor was conducted to clarify the interaction between the wake flow and the wall shear boundary layer. To reproduce the contrasting boundary layer depth, two types of walls—a smooth wall and a regular cube array—were adopted; for each wall, the spanwise distribution of the streamwise velocity was measured at two downwind positions and seven heights within and above the wall boundary layer with and without a spire. The spanwise distribution of the wake generated by the spire far above the wall boundary layer with low turbulence agreed with the well-known function for two-dimensional (2D) wake flow, derived theoretically from the gradient-diffusion model, despite the weak asymmetry of the inflow. In contrast, the spanwise distribution of the wake within or near the outer edge of the wall boundary layer showed different trends from that of the 2D wake flow. In the former, the expansion of the wake width is compressed in the lateral direction by the turbulence of the wall boundary layer and the velocity deficit of the wake is sustained far from the spire. Kyushu University 2016 Article PeerReviewed application/pdf en http://umpir.ump.edu.my/id/eprint/13939/1/An%20experimental%20study%20on%20aerodynamic%20interaction%20between%20a%20boundary%20layer%20generated%20by%20a%20smooth%20and%20rough%20wall%20and%20a%20wake%20behind%20a%20spire.pdf application/pdf en http://umpir.ump.edu.my/id/eprint/13939/7/fkm-2016-experimental%20study.pdf Nurizzatul Athika, Rahmat and Hagishima, Aya and Ikegaya, Naoki and Tanimoto, Jun (2016) An Experimental Study on Aerodynamic Interaction Between a Boundary Layer Generated by a Smooth And Rough Wall and a Wake Behind a Spire. Engineering Sciences Reports, 37 (2). pp. 19-26. ISSN 0388-1717 http://www.tj.kyushu-u.ac.jp/ja/society_connection/public_pdf/3724.pdf
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Malaysia Pahang
building	UMP Institutional Repository
collection	Online Access
language	English English
topic	TJ Mechanical engineering and machinery
spellingShingle	TJ Mechanical engineering and machinery Nurizzatul Athika, Rahmat Hagishima, Aya Ikegaya, Naoki Tanimoto, Jun An Experimental Study on Aerodynamic Interaction Between a Boundary Layer Generated by a Smooth And Rough Wall and a Wake Behind a Spire
description	A wind tunnel experiment to assess the flow characteristics of the wake behind a spire mounted normal to the wind tunnel floor was conducted to clarify the interaction between the wake flow and the wall shear boundary layer. To reproduce the contrasting boundary layer depth, two types of walls—a smooth wall and a regular cube array—were adopted; for each wall, the spanwise distribution of the streamwise velocity was measured at two downwind positions and seven heights within and above the wall boundary layer with and without a spire. The spanwise distribution of the wake generated by the spire far above the wall boundary layer with low turbulence agreed with the well-known function for two-dimensional (2D) wake flow, derived theoretically from the gradient-diffusion model, despite the weak asymmetry of the inflow. In contrast, the spanwise distribution of the wake within or near the outer edge of the wall boundary layer showed different trends from that of the 2D wake flow. In the former, the expansion of the wake width is compressed in the lateral direction by the turbulence of the wall boundary layer and the velocity deficit of the wake is sustained far from the spire.
format	Article
author	Nurizzatul Athika, Rahmat Hagishima, Aya Ikegaya, Naoki Tanimoto, Jun
author_facet	Nurizzatul Athika, Rahmat Hagishima, Aya Ikegaya, Naoki Tanimoto, Jun
author_sort	Nurizzatul Athika, Rahmat
title	An Experimental Study on Aerodynamic Interaction Between a Boundary Layer Generated by a Smooth And Rough Wall and a Wake Behind a Spire
title_short	An Experimental Study on Aerodynamic Interaction Between a Boundary Layer Generated by a Smooth And Rough Wall and a Wake Behind a Spire
title_full	An Experimental Study on Aerodynamic Interaction Between a Boundary Layer Generated by a Smooth And Rough Wall and a Wake Behind a Spire
title_fullStr	An Experimental Study on Aerodynamic Interaction Between a Boundary Layer Generated by a Smooth And Rough Wall and a Wake Behind a Spire
title_full_unstemmed	An Experimental Study on Aerodynamic Interaction Between a Boundary Layer Generated by a Smooth And Rough Wall and a Wake Behind a Spire
title_sort	experimental study on aerodynamic interaction between a boundary layer generated by a smooth and rough wall and a wake behind a spire
publisher	Kyushu University
publishDate	2016
url	http://umpir.ump.edu.my/id/eprint/13939/ http://umpir.ump.edu.my/id/eprint/13939/ http://umpir.ump.edu.my/id/eprint/13939/1/An%20experimental%20study%20on%20aerodynamic%20interaction%20between%20a%20boundary%20layer%20generated%20by%20a%20smooth%20and%20rough%20wall%20and%20a%20wake%20behind%20a%20spire.pdf http://umpir.ump.edu.my/id/eprint/13939/7/fkm-2016-experimental%20study.pdf
first_indexed	2023-09-18T22:17:06Z
last_indexed	2023-09-18T22:17:06Z
_version_	1777415410929369088

An Experimental Study on Aerodynamic Interaction Between a Boundary Layer Generated by a Smooth And Rough Wall and a Wake Behind a Spire

Similar Items