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Grooved cavity as a passive controller behind backward facing step

A semicircular grooved cavity is designed for controlling the base pressure and hence the base drag in case of a backward facing step. This paper presents the effect of the continuous grooved cavity to control the base pressure for various compressible subsonic flow to minimize the base drag. The...

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Main Authors: Khan, Sher Afghan, Alrobaian, Abdul Rahman, Asad Ullah, Mohammed, Khan, Abdul Mohsin
Format: Article
Language:English
English
Published: Penerbit Akademia Baru 2019
Subjects:
TL1 Motor vehicles
Online Access:http://irep.iium.edu.my/69634/7/69634%20Grooved%20Cavity%20as%20a%20Passive%20Controller.pdf
http://irep.iium.edu.my/69634/8/69634%20Grooved%20Cavity%20as%20a%20Passive%20Controller%20%20SCOPUS.pdf
http://irep.iium.edu.my/69634/
http://www.akademiabaru.com/doc/ARFMTSV53_N2_P185_193.pdf
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spelling my.iium.irep.696342020-01-07T09:03:13Z http://irep.iium.edu.my/69634/ Grooved cavity as a passive controller behind backward facing step Khan, Sher Afghan Alrobaian, Abdul Rahman Asad Ullah, Mohammed Khan, Abdul Mohsin TL1 Motor vehicles A semicircular grooved cavity is designed for controlling the base pressure and hence the base drag in case of a backward facing step. This paper presents the effect of the continuous grooved cavity to control the base pressure for various compressible subsonic flow to minimize the base drag. The grooved cavity of 1.5 mm radius at 45o along a pitch circle diameter of 23 mm in the base region is employed as a passive controller. The test is conducted for Mach 0.6, 0.7, 0.8 and 0.9. The square nozzle of side 10 mm with an angle of incidence as 150 on all four sides from which the flow suddenly expands to a square duct of side 25 mm acts as backward facing step model. The experimental investigation is carried out for three ducts of length equivalent to 4, 6 and 8 times width. The results of this investigation provide grooved cavity at 45o as a very effective passive control mechanism to regulate the base flows, further at higher Mach numbers it may be associated with the minor effect on the main flow field. Penerbit Akademia Baru 2019-01 Article PeerReviewed application/pdf en http://irep.iium.edu.my/69634/7/69634%20Grooved%20Cavity%20as%20a%20Passive%20Controller.pdf application/pdf en http://irep.iium.edu.my/69634/8/69634%20Grooved%20Cavity%20as%20a%20Passive%20Controller%20%20SCOPUS.pdf Khan, Sher Afghan and Alrobaian, Abdul Rahman and Asad Ullah, Mohammed and Khan, Abdul Mohsin (2019) Grooved cavity as a passive controller behind backward facing step. International Journal of Advanced Research in Fluid Mechanics and Thermal Sciences, 53 (2). pp. 185-193. ISSN 2289-7879 http://www.akademiabaru.com/doc/ARFMTSV53_N2_P185_193.pdf
institution Universiti Islam Antarabangsa Malaysia
building IIUM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider International Islamic University Malaysia
content_source IIUM Repository (IREP)
url_provider http://irep.iium.edu.my/
language English
English
topic TL1 Motor vehicles
spellingShingle TL1 Motor vehicles
Khan, Sher Afghan
Alrobaian, Abdul Rahman
Asad Ullah, Mohammed
Khan, Abdul Mohsin
Grooved cavity as a passive controller behind backward facing step
description A semicircular grooved cavity is designed for controlling the base pressure and hence the base drag in case of a backward facing step. This paper presents the effect of the continuous grooved cavity to control the base pressure for various compressible subsonic flow to minimize the base drag. The grooved cavity of 1.5 mm radius at 45o along a pitch circle diameter of 23 mm in the base region is employed as a passive controller. The test is conducted for Mach 0.6, 0.7, 0.8 and 0.9. The square nozzle of side 10 mm with an angle of incidence as 150 on all four sides from which the flow suddenly expands to a square duct of side 25 mm acts as backward facing step model. The experimental investigation is carried out for three ducts of length equivalent to 4, 6 and 8 times width. The results of this investigation provide grooved cavity at 45o as a very effective passive control mechanism to regulate the base flows, further at higher Mach numbers it may be associated with the minor effect on the main flow field.
format Article
author Khan, Sher Afghan
Alrobaian, Abdul Rahman
Asad Ullah, Mohammed
Khan, Abdul Mohsin
author_facet Khan, Sher Afghan
Alrobaian, Abdul Rahman
Asad Ullah, Mohammed
Khan, Abdul Mohsin
author_sort Khan, Sher Afghan
title Grooved cavity as a passive controller behind backward facing step
title_short Grooved cavity as a passive controller behind backward facing step
title_full Grooved cavity as a passive controller behind backward facing step
title_fullStr Grooved cavity as a passive controller behind backward facing step
title_full_unstemmed Grooved cavity as a passive controller behind backward facing step
title_sort grooved cavity as a passive controller behind backward facing step
publisher Penerbit Akademia Baru
publishDate 2019
url http://irep.iium.edu.my/69634/7/69634%20Grooved%20Cavity%20as%20a%20Passive%20Controller.pdf
http://irep.iium.edu.my/69634/8/69634%20Grooved%20Cavity%20as%20a%20Passive%20Controller%20%20SCOPUS.pdf
http://irep.iium.edu.my/69634/
http://www.akademiabaru.com/doc/ARFMTSV53_N2_P185_193.pdf
_version_ 1657565902929920000
score 13.211869

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