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Numerical Analysis of a Microjet-Based Method for Active Flow Control in Convergent-Divergent Nozzles with a Sudden Expansion

Abdul Aabid1,*, Sher Afghan Khan2, Muneer Baig1

1 Department of Engineering Management, College of Engineering, Prince Sultan University, Riyadh, 11586, Saudi Arabia
2 Department of Mechanical Engineering, Faculty of Engineering, International Islamic University Malaysia, Kuala Lumpur, 50728, Malaysia

* Corresponding Author: Abdul Aabid. Email: email

(This article belongs to the Special Issue: Materials, Energy, and Fluid Dynamics)

Fluid Dynamics & Materials Processing 2022, 18(6), 1877-1900. https://doi.org/10.32604/fdmp.2022.021860

Abstract

A method based on microjets is implemented to control the flow properties in a convergent-divergent nozzle undergoing a sudden expansion. Three different variants of this active control technique are explored numerically by means of a finite-volume method for compressible fluid flow: with the first one, the control is implemented at the base, with the second at the wall, while the third one may be regarded as a combination of these. When jets are over-expanded, the control is not very effective. However, when a favourable pressure gradient is established in the nozzle, the control becomes effective, leading to an increase in the base pressure.

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APA Style
Aabid, A., Khan, S.A., Baig, M. (2022). Numerical analysis of a microjet-based method for active flow control in convergent-divergent nozzles with a sudden expansion. Fluid Dynamics & Materials Processing, 18(6), 1877-1900. https://doi.org/10.32604/fdmp.2022.021860
Vancouver Style
Aabid A, Khan SA, Baig M. Numerical analysis of a microjet-based method for active flow control in convergent-divergent nozzles with a sudden expansion. Fluid Dyn Mater Proc. 2022;18(6):1877-1900 https://doi.org/10.32604/fdmp.2022.021860
IEEE Style
A. Aabid, S.A. Khan, and M. Baig "Numerical Analysis of a Microjet-Based Method for Active Flow Control in Convergent-Divergent Nozzles with a Sudden Expansion," Fluid Dyn. Mater. Proc., vol. 18, no. 6, pp. 1877-1900. 2022. https://doi.org/10.32604/fdmp.2022.021860



cc Copyright © 2022 The Author(s). Published by Tech Science Press.
This work is licensed under a Creative Commons Attribution 4.0 International License , which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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