Effect of flow compressibility in convergent-divergent nozzle

Hakimi, Muhammad Adib and Nordin, Normayati (2022) Effect of flow compressibility in convergent-divergent nozzle. Journal of Complex Flow, 4 (2). pp. 33-38. ISSN 2672-7374

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: Nozzles come in a range of shapes and sizes based on a purpose such as De Laval nozzle also known as the converging diverging nozzle. Convergent- divergent nozzle is commonly used in modern rocket engines that accelerates at high velocity till the supersonic region Ma>1. This paper aims to investigate numerically the effect of area ratio of the convergent divergent throat and the Mach number from the incompressible flow to compressible flow. The software that were used to simulate cases is ANSYS Computational Fluid Dynamics (CFD) code FLUENT. The area ratio throat (AR= 5mm, 6mm, 7mm, and 8mm) and Mach number (Ma = 0.2, 1.0 and 1.8) was varied to obtain more specific result. The result from this paper has shown that the most effective Mach number and area ratio are at the 0.2 Ma with the AR=5mm According to the findings of this research, the most effective Mach number and area ratio are at 0.2 Ma with AR=5mm. According to the calculations performed in this research, the percentage variation of velocity at 0.2Ma was larger than at 1.0 Ma and 1.8 Ma. This happen cause at the sonic and supersonic flow there is factor that disturb the flow such as the back pressure and normal shock

Item Type: Article
Uncontrolled Keywords: Converging–diverging nozzle; FLUENT; Mach number; back pressure; normal shock.
Subjects: T Technology > T Technology (General)
Divisions: Faculty of Mechanical and Manufacturing Engineering > Advanced Manufacturing and Materials Centre
Depositing User: Mr. Abdul Rahim Mat Radzuan
Date Deposited: 18 Dec 2022 02:59
Last Modified: 18 Dec 2022 02:59
URI: http://eprints.uthm.edu.my/id/eprint/8113

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