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Effect on base pressure in suddenly expanded flows with variable location of microjets

Baig, Maugal Ahmed Ali and Khan, Sher Afghan and Rathakrishnan, E. (2012) Effect on base pressure in suddenly expanded flows with variable location of microjets. International Journal of Current Research and Review (IJCRR), 4 (16). pp. 1-8. ISSN 2231-2196

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Abstract

This paper presents results of an experimental investigation to study the effectiveness of micro jets to control the base pressure in suddenly expanded axi-symmetric ducts when the micro jets are placed at different location (i.e. at the base, at the duct, and at base as well as at the duct). The purpose of this study is to study the individual as well as the combined effectiveness of the micro jet as the active controller of the base pressure. The area ratio of the present study is 3.24. The nozzle generating the above jet Mach numbers were operated with nozzle pressure ratio (NPR) in the range 3 to 11. In addition to base pressure, wall pressure field along the duct was also studied. As high as 70 percent increase in base pressure was achieved for Mach number 2.58 at NPR 11 when the micro jets are placed at the base as well as the duct.

Item Type: Article (Journal)
Additional Information: 7395/49961
Uncontrolled Keywords: Area Ratio, Nozzle Pressure Ratio, Wall pressure, Sudden Expansion
Subjects: T Technology > TL Motor vehicles. Aeronautics. Astronautics
T Technology > TL Motor vehicles. Aeronautics. Astronautics > TL787 Astronautics
Kulliyyahs/Centres/Divisions/Institutes: Kulliyyah of Engineering > Department of Mechanical Engineering
Depositing User: Prof. Dr. Sher Afghan Khan
Date Deposited: 20 Apr 2016 14:51
Last Modified: 18 Jul 2016 09:40
URI: http://irep.iium.edu.my/id/eprint/49961

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