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Influence of microjets on flow development for diameter ratio of 1.6 for correctly expanded nozzles

Faheem, Mohammed and Rayid, Muneer and Avvad, Mohammad and Aneeque, Mohammad and Khan, Sher Afghan (2021) Influence of microjets on flow development for diameter ratio of 1.6 for correctly expanded nozzles. In: 2nd International Conference on Smart and Sustainable Developments in Materials, Manufacturing and Energy Engineering (SME), 22-23 December 2020, Nitte, India.

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Abstract

This paper aims to study the microjet’s efficacy as a management tool for the duct’s flow field. The nozzle was correctly expanded for a diameter ratio of 1.6 (i.e., area ratio = 2.56). The Mach numbers considered were from 1.25 to 2. The investigation shows that the development and recovery of the duct flow are smooth at lower Mach numbers. At Mach 1.48, jet noise was reduced considerably when the control is initiated. For higher Mach numbers of the study, namely Mach 1.6, 1.8, and 2.0, The flow’s oscillatory nature was noticed. This phenomenon reiterates that the nozzles flow is wave-dominated. For most of the flow, the flowing nature remains unaltered due to control. The flow remained connected with the duct for duct length twice the nozzle exit diameter

Item Type: Conference or Workshop Item (Plenary Papers)
Uncontrolled Keywords: Wall pressure, Area ratio, Supersonic jet, Active control, Microjets
Subjects: T Technology > TL Motor vehicles. Aeronautics. Astronautics
T Technology > TL Motor vehicles. Aeronautics. Astronautics > TL787 Astronautics
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: 05 Oct 2021 17:52
Last Modified: 05 Oct 2021 21:06
URI: http://irep.iium.edu.my/id/eprint/92648

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