Investigation of tiny jet locations effect in a sudden expansion duct for high-speed flow control using experimental and optimization methods

Aabid, Abdul and Khan, Sher Afghan and Afzal, Asif and Baig, Muneer (2021) Investigation of tiny jet locations effect in a sudden expansion duct for high-speed flow control using experimental and optimization methods. Meccanica, 56 (11). pp. 1-26. ISSN 0025-6455 E-ISSN 1572-9648

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Abstract

The present research focuses on dynamic flow control management using tiny jets with three combinations; the first one located at 90� intervals of the base, the second one located at 0.5D (duct diameter) of the wall, and the third one located at both base and wall with a 0.05 radius respectively which injects the air. Comparative analysis with these controls and without control is considered. The wind tunnel tests were done in existence and the absence of the tiny jets. For the experiments, the duct diameter ratio considered was 1.8, the duct length L = 10D, Mach numbers 1.87, 2.2, and 2.58, and NPR’s range from 3 to 11. Additionally, the experiments were repeated to the design experiments (DOE) method based on the factorial design-L9 orthogonal array (OA). Three variables with two parameters were designated for flow and the DOE. An analysis of variance, response surface analysis, regression equations, response optimization, and data distribution was executed to optimize the experimental results. The established prototypes are statistically appropriate and achieved in generating realistic forecasts for all instances. From the results, it is apparent that for a conferred constraint, one can find a duct length of the circular pipe, which will result in the highest growth or decline of pressure in the base region.

Item Type:	Article (Journal)
Additional Information:	7395/93525
Uncontrolled Keywords:	Location of microjets; High-speed flow; Area-ratio; Dynamic control; Surface response
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:	08 Nov 2021 08:45
Last Modified:	08 Nov 2021 08:45
URI:	http://irep.iium.edu.my/id/eprint/93525

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