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Passive Control of Base Pressure in a Converging-Diverging Nozzle with Area Ratio 2.56 at Mach 1.8

Nur Husnina Muhamad Zuraidi1, Sher Afghan Khan1,*, Abdul Aabid2,*, Muneer Baig2, Istiyaq Mudassir Shaiq3

1 Department of Mechanical Engineering, International Islamic University Malaysia, P.O. Box 10, Kuala Lumpur, 50728, Malaysia
2 Department of Engineering Management, College of Engineering, Prince Sultan University, P.O. Box 66833, Riyadh, 11586, Saudi Arabia
3 School of Aerospace Engineering, Engineering Campus, Universiti Sains Malaysia, Nibong Tebal, Pulau Pinang, 14300, Malaysia

* Corresponding Authors: Sher Afghan Khan. Email: email; Abdul Aabid. Email: email

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

Fluid Dynamics & Materials Processing 2023, 19(3), 807-829. https://doi.org/10.32604/fdmp.2023.023246

Abstract

In this study, a duct is considered and special attention is paid to a passive method for the control of the base pressure relying on the use of a cavity with a variable aspect ratio. The Mach number considered is 1.8, and the area ratio of the duct is 2.56. In particular, two cavities are examined, their sizes being 3:3 and 6:3. The used L/D spans the interval 1–10 while the NPRs (nozzle pressure ratio) range from 2 to 9. The results show that the control becomes effective once the nozzles are correctly expanded or under-expanded. The pressure contours at different NPR and L/D are presented. It is shown that the NPR and cavity location strongly influence the base pressure. The NPR, Mach number, and cavity aspect ratio have a strong effect on the base pressure in the wake region.

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APA Style
Zuraidi, N.H.M., Khan, S.A., Aabid, A., Baig, M., Shaiq, I.M. (2023). Passive control of base pressure in a converging-diverging nozzle with area ratio 2.56 at mach 1.8. Fluid Dynamics & Materials Processing, 19(3), 807-829. https://doi.org/10.32604/fdmp.2023.023246
Vancouver Style
Zuraidi NHM, Khan SA, Aabid A, Baig M, Shaiq IM. Passive control of base pressure in a converging-diverging nozzle with area ratio 2.56 at mach 1.8. Fluid Dyn Mater Proc. 2023;19(3):807-829 https://doi.org/10.32604/fdmp.2023.023246
IEEE Style
N.H.M. Zuraidi, S.A. Khan, A. Aabid, M. Baig, and I.M. Shaiq "Passive Control of Base Pressure in a Converging-Diverging Nozzle with Area Ratio 2.56 at Mach 1.8," Fluid Dyn. Mater. Proc., vol. 19, no. 3, pp. 807-829. 2023. https://doi.org/10.32604/fdmp.2023.023246



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