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Experimental and numerical investigation of expansion corner effects on isolator performance

Quadros, Jaimon Dennis and Khan, Sher Afghan and T., Prashanth (2020) Experimental and numerical investigation of expansion corner effects on isolator performance. International Journal of Turbo & Jet Engines, Ahead of print. pp. 1-8. ISSN 0334-0082 E-ISSN 2191-0332 (In Press)

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Abstract

In the present study, the effect of the expansion corner on the suddenly expanded flow process has been studied. Experimental investigations have been carried out on a convergent-divergent (C-D) nozzle and isolator duct, where the expansion of the channel is formed through the presence of a 1, 2, and 3 expansion corners (EC) respectively. Flow from nozzle exit of the nozzle of Mach, M = 2.0 was suddenly expanded into the axi-symmetric duct having a cross-sectional area of 4.84 times the nozzle exit area. The wall static pressure along the length of the duct and the Pitot pressure at the exit plane of the duct was measured for all the configurations. Computational fluid dynamics (CFD) the technique was employed for visualizing the shock train in the expanded duct. The isolator with one expansion a corner was found to be more efficient in achieving a high static pressure rise. The experimental and numerical wall static pressure distribution values were compared for isolators with EC = 2 and found to be in good agreement with each other with a maximum absolute percentage deviation of 11%.

Item Type: Article (Journal)
Additional Information: 7395/83922
Uncontrolled Keywords: CFD, isolator, wall static pressure.
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 > Department of Mechanical Engineering
Kulliyyah of Engineering
Depositing User: Prof. Dr. Sher Afghan Khan
Date Deposited: 02 Nov 2020 11:51
Last Modified: 02 Nov 2020 11:51
URI: http://irep.iium.edu.my/id/eprint/83922

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