Active control of flow through the nozzles at sonic Mach number

The effectiveness of micro jets to control the base pressure in suddenly expanded axi-symmetric ducts are studied experimentally. As an active control in the form of four micro jets of 1 mm orifice diameter located at 900 intervals along a pitch circle diameter of 1.3 times the nozzle exit diameter...

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Main Authors:	Ashfaq, Syed, Khan, Sher Afghan, Rathakrishnan, Ethirajan
Format:	Article
Language:	English
Published:	RS Publication 2013
Subjects:	TL Motor vehicles. Aeronautics. Astronautics
Online Access:	http://irep.iium.edu.my/49837/ http://irep.iium.edu.my/49837/ http://irep.iium.edu.my/49837/1/SONIC_IJETED_15412253_ASHFAQ.pdf

id	iium-49837
recordtype	eprints
spelling	iium-498372016-07-18T02:06:20Z http://irep.iium.edu.my/49837/ Active control of flow through the nozzles at sonic Mach number Ashfaq, Syed Khan, Sher Afghan Rathakrishnan, Ethirajan TL Motor vehicles. Aeronautics. Astronautics The effectiveness of micro jets to control the base pressure in suddenly expanded axi-symmetric ducts are studied experimentally. As an active control in the form of four micro jets of 1 mm orifice diameter located at 900 intervals along a pitch circle diameter of 1.3 times the nozzle exit diameter in the base region was employed. The Mach number of the present study is unity. The area ratio (ratio of area of suddenly expanded duct to nozzle exit area) studied are 2.56, 3.24, 4.84 and 6.25. The L/D ratio of the sudden expansion duct varies from 10 to 1. From the experimental results, it is found that the micro jets can serve as active controllers for base pressure. Further, the control effectiveness of the micro jets is getting enhanced under the influence of favourable pressure gradient. To study the effect of micro jets on the quality of flow in the enlarged duct wall pressure was measured and it is found that the micro jets do not disturb the flow field. RS Publication 2013-03 Article PeerReviewed application/pdf en http://irep.iium.edu.my/49837/1/SONIC_IJETED_15412253_ASHFAQ.pdf Ashfaq, Syed and Khan, Sher Afghan and Rathakrishnan, Ethirajan (2013) Active control of flow through the nozzles at sonic Mach number. International Journal of Emerging trends in Engineering and Development (IJETED), 2 (3). pp. 73-80. ISSN 2249-6149 http://www.rspublication.com/ijeted/march13/9.pdf
repository_type	Digital Repository
institution_category	Local University
institution	International Islamic University Malaysia
building	IIUM Repository
collection	Online Access
language	English
topic	TL Motor vehicles. Aeronautics. Astronautics
spellingShingle	TL Motor vehicles. Aeronautics. Astronautics Ashfaq, Syed Khan, Sher Afghan Rathakrishnan, Ethirajan Active control of flow through the nozzles at sonic Mach number
description	The effectiveness of micro jets to control the base pressure in suddenly expanded axi-symmetric ducts are studied experimentally. As an active control in the form of four micro jets of 1 mm orifice diameter located at 900 intervals along a pitch circle diameter of 1.3 times the nozzle exit diameter in the base region was employed. The Mach number of the present study is unity. The area ratio (ratio of area of suddenly expanded duct to nozzle exit area) studied are 2.56, 3.24, 4.84 and 6.25. The L/D ratio of the sudden expansion duct varies from 10 to 1. From the experimental results, it is found that the micro jets can serve as active controllers for base pressure. Further, the control effectiveness of the micro jets is getting enhanced under the influence of favourable pressure gradient. To study the effect of micro jets on the quality of flow in the enlarged duct wall pressure was measured and it is found that the micro jets do not disturb the flow field.
format	Article
author	Ashfaq, Syed Khan, Sher Afghan Rathakrishnan, Ethirajan
author_facet	Ashfaq, Syed Khan, Sher Afghan Rathakrishnan, Ethirajan
author_sort	Ashfaq, Syed
title	Active control of flow through the nozzles at sonic Mach number
title_short	Active control of flow through the nozzles at sonic Mach number
title_full	Active control of flow through the nozzles at sonic Mach number
title_fullStr	Active control of flow through the nozzles at sonic Mach number
title_full_unstemmed	Active control of flow through the nozzles at sonic Mach number
title_sort	active control of flow through the nozzles at sonic mach number
publisher	RS Publication
publishDate	2013
url	http://irep.iium.edu.my/49837/ http://irep.iium.edu.my/49837/ http://irep.iium.edu.my/49837/1/SONIC_IJETED_15412253_ASHFAQ.pdf
first_indexed	2023-09-18T21:10:24Z
last_indexed	2023-09-18T21:10:24Z
_version_	1777411214522974208

Active control of flow through the nozzles at sonic Mach number

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