Effect of control on the duct flow at high mach numbers

Aabid, Abdul and Khan, Sher Afghan and Baig, Maugal Ahmed Ali and Rao, K Srinivasa (2021) Effect of control on the duct flow at high mach numbers. In: International Conference on Research and Advances in Mechanical Engineering(ICRAME 2020), 10th -11th December 2020, Hyderabad, India.

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Abstract

Once the stream is drained through a nozzle, this research explores the pressure in a circular duct. This research investigates when the control is triggered, the pressure in the tube, and flow development. At the base, the flow regulators as tiny jets are used at PCD of 0.013 m, and the orifice radius is 0.5 mm. The flow variables are Mach (M) and the NPR. The investigation was done for M = 2.1 & 2.8. The expansion level was from 3 to 11. The duct area ratio used is 6.25. The duct length varied from 10 to 1. For M = 2.1, the tested NPRs were at different expansion levels. When they are under the impact of under-expansion, flow oscillations are noticed. At NPR 3, an adverse pressure exists at Mach 2.1, and similar patterns too seen for higher NPRs. The flow's wavy nature is dying out with the decrease in pipe length, and pressure recovery is smooth. The control regulator has not influenced the flow adversely.

Item Type:	Conference or Workshop Item (Plenary Papers)
Additional Information:	7395/88469
Uncontrolled Keywords:	Nozzle, Mach number, NPR, L/D, and supersonic flows
Subjects:	T Technology > TL Motor vehicles. Aeronautics. Astronautics > TL780 Rockets
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Engineering Kulliyyah of Engineering > Department of Mechanical Engineering
Depositing User:	Prof. Dr. Sher Afghan Khan
Date Deposited:	02 Mar 2021 15:03
Last Modified:	30 Apr 2021 11:51
URI:	http://irep.iium.edu.my/id/eprint/88469

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