Active control of base pressure with counter clockwise rotating cylinder at Mach 2

The effect of dynamic cylinder as an active controller to control the base pressure for different level of expansion have been experimentally investigated at Mach 2 through CD nozzle for area ratio 9. Solitary counter clockwise rotating cylinder of 2 mm diameter when seen from top, at 2 mm from...

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Main Authors:	Asadullah, Mohammed, Khan, Sher Afghan, Asrar, Waqar
Format:	Conference or Workshop Item
Language:	English English English
Published:	Institute of Electrical and Electronics Engineers Inc. 2018
Subjects:	T Technology (General) TJ Mechanical engineering and machinery
Online Access:	http://irep.iium.edu.my/67151/ http://irep.iium.edu.my/67151/ http://irep.iium.edu.my/67151/ http://irep.iium.edu.my/67151/1/67151_Active%20Control%20of%20Base%20Pressure%20with%20Counter_complete.pdf http://irep.iium.edu.my/67151/2/67151_Active%20Control%20of%20Base%20Pressure%20with%20Counter_scopus.pdf http://irep.iium.edu.my/67151/13/67151_Active%20Control%20of%20Base%20Pressure%20with%20Counter%20_wos.pdf

id	iium-67151
recordtype	eprints
spelling	iium-671512019-08-08T08:58:41Z http://irep.iium.edu.my/67151/ Active control of base pressure with counter clockwise rotating cylinder at Mach 2 Asadullah, Mohammed Khan, Sher Afghan Asrar, Waqar T Technology (General) TJ Mechanical engineering and machinery The effect of dynamic cylinder as an active controller to control the base pressure for different level of expansion have been experimentally investigated at Mach 2 through CD nozzle for area ratio 9. Solitary counter clockwise rotating cylinder of 2 mm diameter when seen from top, at 2 mm from side wall of square duct and 8 mm from square nozzle exit in the base region is mounted as a controller. Base pressure in the wake area after sudden expansion of jets from the exit of nozzle has been measured. The length-to-width ratio of sudden expansion duct taken is 10. The experiments were carried out by operating jets for different nozzle pressure ratios (NPR). The wall pressure distribution was also measured for with and without control cases in the duct to see that the amplitude of oscillations does not adversely influence the flow field in the duct. Counter clockwise rotating cylinder as an active controller were found to increase the base pressure as high as 62 percent at NPR 8.5 and 53 percent at NPR 7.8. The control effectiveness is marginal for over expanded nozzles. The wall pressure flow field with and without control are identical with minor fluctuations. Institute of Electrical and Electronics Engineers Inc. 2018-01-31 Conference or Workshop Item PeerReviewed application/pdf en http://irep.iium.edu.my/67151/1/67151_Active%20Control%20of%20Base%20Pressure%20with%20Counter_complete.pdf application/pdf en http://irep.iium.edu.my/67151/2/67151_Active%20Control%20of%20Base%20Pressure%20with%20Counter_scopus.pdf application/pdf en http://irep.iium.edu.my/67151/13/67151_Active%20Control%20of%20Base%20Pressure%20with%20Counter%20_wos.pdf Asadullah, Mohammed and Khan, Sher Afghan and Asrar, Waqar (2018) Active control of base pressure with counter clockwise rotating cylinder at Mach 2. In: 4th IEEE International Conference on Engineering Technologies and Applied Sciences, ICETAS 2017, 29 November - 1 December 2017, AMA International University Salmabad; Bahrain. https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=8277857 10.1109/ICETAS.2017.8277857
repository_type	Digital Repository
institution_category	Local University
institution	International Islamic University Malaysia
building	IIUM Repository
collection	Online Access
language	English English English
topic	T Technology (General) TJ Mechanical engineering and machinery
spellingShingle	T Technology (General) TJ Mechanical engineering and machinery Asadullah, Mohammed Khan, Sher Afghan Asrar, Waqar Active control of base pressure with counter clockwise rotating cylinder at Mach 2
description	The effect of dynamic cylinder as an active controller to control the base pressure for different level of expansion have been experimentally investigated at Mach 2 through CD nozzle for area ratio 9. Solitary counter clockwise rotating cylinder of 2 mm diameter when seen from top, at 2 mm from side wall of square duct and 8 mm from square nozzle exit in the base region is mounted as a controller. Base pressure in the wake area after sudden expansion of jets from the exit of nozzle has been measured. The length-to-width ratio of sudden expansion duct taken is 10. The experiments were carried out by operating jets for different nozzle pressure ratios (NPR). The wall pressure distribution was also measured for with and without control cases in the duct to see that the amplitude of oscillations does not adversely influence the flow field in the duct. Counter clockwise rotating cylinder as an active controller were found to increase the base pressure as high as 62 percent at NPR 8.5 and 53 percent at NPR 7.8. The control effectiveness is marginal for over expanded nozzles. The wall pressure flow field with and without control are identical with minor fluctuations.
format	Conference or Workshop Item
author	Asadullah, Mohammed Khan, Sher Afghan Asrar, Waqar
author_facet	Asadullah, Mohammed Khan, Sher Afghan Asrar, Waqar
author_sort	Asadullah, Mohammed
title	Active control of base pressure with counter clockwise rotating cylinder at Mach 2
title_short	Active control of base pressure with counter clockwise rotating cylinder at Mach 2
title_full	Active control of base pressure with counter clockwise rotating cylinder at Mach 2
title_fullStr	Active control of base pressure with counter clockwise rotating cylinder at Mach 2
title_full_unstemmed	Active control of base pressure with counter clockwise rotating cylinder at Mach 2
title_sort	active control of base pressure with counter clockwise rotating cylinder at mach 2
publisher	Institute of Electrical and Electronics Engineers Inc.
publishDate	2018
url	http://irep.iium.edu.my/67151/ http://irep.iium.edu.my/67151/ http://irep.iium.edu.my/67151/ http://irep.iium.edu.my/67151/1/67151_Active%20Control%20of%20Base%20Pressure%20with%20Counter_complete.pdf http://irep.iium.edu.my/67151/2/67151_Active%20Control%20of%20Base%20Pressure%20with%20Counter_scopus.pdf http://irep.iium.edu.my/67151/13/67151_Active%20Control%20of%20Base%20Pressure%20with%20Counter%20_wos.pdf
first_indexed	2023-09-18T21:35:20Z
last_indexed	2023-09-18T21:35:20Z
_version_	1777412782949400576

Active control of base pressure with counter clockwise rotating cylinder at Mach 2

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