Flow control with aero-spike behind bluff body

Khan, Sher Afghan and Asad Ullah, Mohammed and G M, Fharukh Ahmed and Jalaluddeen, Ahmed and Ali Baig, Maughal Ahmed (2018) Flow control with aero-spike behind bluff body. International Journal of Mechanical and Production Engineering Research and Development (IJMPERD), 8 (3). pp. 1001-1008. ISSN 2249-6890 E-ISSN 2249-8001

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Abstract

Flow control in high-speed is challenging due to the high-pressure shock and low-pressure recirculation bubble attached around the vehicle. Wave drag, and Base drag are important accouterments of flow around high-speed objects. This paper deals with base drag, only and presents an experimental study of aerospikes behind the base of bluff bodies to control this drag. A plate of 1 mm thickness with two spikes at 11.5 mm is placed between the nozzle and duct as a passive controller. The Mach numbers deployed for the subsonic regime were 0.6, 0.7 and for transonic regime were 0.8, 0.9 for area ratio 6.25. The L/W ratio taken were 4W, 6W, 8W and 10W. Aerospikes were found to be very effective in controlling base pressure in the transonic regime without influencing the main flow field.

Item Type:	Article (Journal)
Additional Information:	7395/64272
Uncontrolled Keywords:	Base Pressure, Wall Pressure & Mach Number
Subjects:	T Technology > TL Motor vehicles. Aeronautics. Astronautics > TL1 Motor vehicles
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Engineering > Department of Mechanical Engineering
Depositing User:	Prof. Dr. Sher Afghan Khan
Date Deposited:	29 Jun 2018 09:28
Last Modified:	31 Jan 2019 11:25
URI:	http://irep.iium.edu.my/id/eprint/64272

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