Investigation of the effects of nozzle exit mach number and nozzle pressure ratio on axisymmetric flow through suddenly expanded nozzles

Khan, Sher Afghan and Mohiuddin, M and Saleel, Ahmad C and G M, Fharukh (2019) Investigation of the effects of nozzle exit mach number and nozzle pressure ratio on axisymmetric flow through suddenly expanded nozzles. International Journal of Engineering and Advanced Technology (IJEAT), 8 (3). pp. 570-578. E-ISSN 2249 – 8958

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Abstract

Computational Fluid Dynamics simulations were carried out using ANSYS FLUENT for suddenly expanded flow through the convergent-divergent nozzle and a suddenly expanded duct. The Length-to-Diameter ratio of 10 for the duct was used in the analysis. Also, an Area Ratio between CD Nozzle exit area and Duct Area was used to be 1.6. The effects of Nozzle Exit Mach number and the Nozzle Pressure Ratios were evaluated by conducting the simulations for Nozzle Exit Mach numbers: 1.87, 2.25 and 2.58. For each Mach number then, Nozzle Pressure Ratios of 3, 5, 7, 9, and 11 were set respectively. Making a total of 15 cases. All the cases were simulated using the k-ω turbulence model. Simulated results agree with the experimental data. From the analysis, it is clear that the Nozzle Exit Mach number and Nozzle Pressure Ratio have a direct effect on the expanded flow exiting the nozzle.

Item Type:	Article (Journal)
Additional Information:	7395/71059
Uncontrolled Keywords:	Base Pressure; Wall Pressure; Flow Characteristics; Nozzle Pressure Ratio
Subjects:	T Technology > TJ Mechanical engineering and machinery > TJ751 Miscellaneous motors and engines. Including gas, gasoline, diesel
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:	12 Mar 2019 15:42
Last Modified:	12 Jul 2019 15:42
URI:	http://irep.iium.edu.my/id/eprint/71059

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