Control of nozzle flow using microjets at supersonic Mach Regime

This article reports the active control of base flows using the experimental procedure. Active control of base pressure helps in reducing the base drag in aerodynamic devices having suddenly expanded flows. Active control in the form of microjets having 0.5 mm radius placed at forty-five degrees apa...

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Main Authors:	G M, Fharukh, Khan, Sher Afghan
Format:	Article
Language:	English English
Published:	Materials and Energy Research Center 2019
Subjects:	TL Motor vehicles. Aeronautics. Astronautics TL780 Rockets
Online Access:	http://irep.iium.edu.my/73710/ http://irep.iium.edu.my/73710/ http://irep.iium.edu.my/73710/ http://irep.iium.edu.my/73710/1/73710_Control%20of%20Nozzle%20Flow%20Using%20Microjets.pdf http://irep.iium.edu.my/73710/2/73710_Control%20of%20Nozzle%20Flow%20Using%20Microjets_SCOPUS.pdf

id	iium-73710
recordtype	eprints
spelling	iium-737102019-11-24T11:01:10Z http://irep.iium.edu.my/73710/ Control of nozzle flow using microjets at supersonic Mach Regime G M, Fharukh Khan, Sher Afghan TL Motor vehicles. Aeronautics. Astronautics TL780 Rockets This article reports the active control of base flows using the experimental procedure. Active control of base pressure helps in reducing the base drag in aerodynamic devices having suddenly expanded flows. Active control in the form of microjets having 0.5 mm radius placed at forty-five degrees apart is employed to control the base pressure. The Mach numbers of the present analysis are 1.7, 2.3, and 2.7. The length to diameter (L/D) ratio is varied from 10 to 1 and the nozzle pressure ratio (NPR) being changed from 1 to 10 in steps of 1 for base pressure measurements. The area ratio for the entire analysis is fixed at 2.56. Wall pressure distribution along the enlarged duct is also recorded. No change in base pressure increase/decrease is thoroughly analyzed as well. From the experimental investigation, it is found that control plays an important in modifying the base pressure without disturbing the wall pressure distribution. The base pressure variation is entirely different at L/D = 1 compared to a higher L/D ratio due to change in reattachment length and the requirement of the duct length at higher inertia levels. The quality of the flow in the duct in the presence and absence of control remained the same. Materials and Energy Research Center 2019-07 Article PeerReviewed application/pdf en http://irep.iium.edu.my/73710/1/73710_Control%20of%20Nozzle%20Flow%20Using%20Microjets.pdf application/pdf en http://irep.iium.edu.my/73710/2/73710_Control%20of%20Nozzle%20Flow%20Using%20Microjets_SCOPUS.pdf G M, Fharukh and Khan, Sher Afghan (2019) Control of nozzle flow using microjets at supersonic Mach Regime. International Journal of Engineering, 32 (7). pp. 991-998. ISSN 1025-2495 E-ISSN 1735-9244 http://www.ijeir.info/article_91333_2d09bd719a0f0622b9f62887c333b092.pdf 10.5829/ije.2019.32.07a.12
repository_type	Digital Repository
institution_category	Local University
institution	International Islamic University Malaysia
building	IIUM Repository
collection	Online Access
language	English English
topic	TL Motor vehicles. Aeronautics. Astronautics TL780 Rockets
spellingShingle	TL Motor vehicles. Aeronautics. Astronautics TL780 Rockets G M, Fharukh Khan, Sher Afghan Control of nozzle flow using microjets at supersonic Mach Regime
description	This article reports the active control of base flows using the experimental procedure. Active control of base pressure helps in reducing the base drag in aerodynamic devices having suddenly expanded flows. Active control in the form of microjets having 0.5 mm radius placed at forty-five degrees apart is employed to control the base pressure. The Mach numbers of the present analysis are 1.7, 2.3, and 2.7. The length to diameter (L/D) ratio is varied from 10 to 1 and the nozzle pressure ratio (NPR) being changed from 1 to 10 in steps of 1 for base pressure measurements. The area ratio for the entire analysis is fixed at 2.56. Wall pressure distribution along the enlarged duct is also recorded. No change in base pressure increase/decrease is thoroughly analyzed as well. From the experimental investigation, it is found that control plays an important in modifying the base pressure without disturbing the wall pressure distribution. The base pressure variation is entirely different at L/D = 1 compared to a higher L/D ratio due to change in reattachment length and the requirement of the duct length at higher inertia levels. The quality of the flow in the duct in the presence and absence of control remained the same.
format	Article
author	G M, Fharukh Khan, Sher Afghan
author_facet	G M, Fharukh Khan, Sher Afghan
author_sort	G M, Fharukh
title	Control of nozzle flow using microjets at supersonic Mach Regime
title_short	Control of nozzle flow using microjets at supersonic Mach Regime
title_full	Control of nozzle flow using microjets at supersonic Mach Regime
title_fullStr	Control of nozzle flow using microjets at supersonic Mach Regime
title_full_unstemmed	Control of nozzle flow using microjets at supersonic Mach Regime
title_sort	control of nozzle flow using microjets at supersonic mach regime
publisher	Materials and Energy Research Center
publishDate	2019
url	http://irep.iium.edu.my/73710/ http://irep.iium.edu.my/73710/ http://irep.iium.edu.my/73710/ http://irep.iium.edu.my/73710/1/73710_Control%20of%20Nozzle%20Flow%20Using%20Microjets.pdf http://irep.iium.edu.my/73710/2/73710_Control%20of%20Nozzle%20Flow%20Using%20Microjets_SCOPUS.pdf
first_indexed	2023-09-18T21:44:30Z
last_indexed	2023-09-18T21:44:30Z
_version_	1777413359864381440

Control of nozzle flow using microjets at supersonic Mach Regime

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