Effect of expansion level on the flow development with sudden expansion at high Mach numbers

Faheem, Mohammed and Ridwan, R and Muneer, Rayid and Aneeque, Mohammed and Khan, Sher Afghan (2021) Effect of expansion level on the flow development with sudden expansion at high Mach numbers. In: 2nd International Conference on Smart and Sustainable Developments in Materials, Manufacturing and Energy Engineering, SME 2020, Nitte, Karnataka, India.

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Abstract

This paper reports the experimental investigation results to monitor pressure at the base and the duct’s flow development. The study aims to assess the influence of favorable and adverse pressure gradients on flow growth and control efficacy. The experimental tests were conducted at a fixed level of favorable and unfavorable pressure gradient at the nozzles for Mach 1.25 to 3.0 at various duct lengths. Only a few selected cases are considered as representative of all the possibilities. Results show that when the nozzles are under the impact of a favorable pressure gradient, they marginally affect the duct’s flow development. However, when nozzles face an adverse pressure gradient, the control acts negatively, resulting in a decline in pressure. Oscillations dominate the flow for the highest pipe length, but the flow becomes smooth for the lower duct length. In most cases, flow is not negatively affected by control. � 2021 Elsevier Ltd. All rights reserved.

Item Type:	Conference or Workshop Item (Plenary Papers)
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:	06 Oct 2021 15:45
Last Modified:	06 Oct 2021 15:45
URI:	http://irep.iium.edu.my/id/eprint/92644

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