Effect of the arrangement of the injectors on the flow quantities in water injection into the hot supersonic crossflow inside the cylinder

Hossein Ali Kamali, Mahmoud Pasandidehfard and Mohmmad Mehdi Rashidi
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Hossein Ali Kamali: Department of Mechanical Engineering, Ferdowsi University of Mashhad, Mashhad, Iran
Mahmoud Pasandidehfard: Department of Mechanical Engineering, Ferdowsi University of Mashhad, Mashhad, Iran
Mohmmad Mehdi Rashidi: ��Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 610054, Sichuan, P. R. China

International Journal of Modern Physics C (IJMPC), 2024, vol. 35, issue 11, 1-18

Abstract: In this study, the effect of different arrangements of injectors on the injection of liquid water into the hot supersonic crossflow of cylindrical geometry on the performance and the rate of evaporation has been studied using a numerical method. The crossflow has a Mach of about 2 and a total temperature of 800K. At first, the penetration height and droplets produced by atomization in the supersonic flow are validated using the Lagrangian technique, and the results have been compared with the experiments. The usage of heat transfer equations and the evaporation model for the spray evaporation of droplets in the hot flow is also performed in the validation process, and the results are compared with the experimental results. Then, the injection into the examined geometry with four, six and eight injectors in three different arrangements was evaluated. The results indicate that employing an arrangement of eight injectors leads to the most significant reduction in total temperature, with average total temperatures decreasing to below 550K. The results demonstrate a 40% decrease in total pressure, with a decrease in Mach number to about 1 at the end of the cylinder. Additionally, the evaporation rate shows higher evaporation of water in the eight-injector arrangement compared to other arrangements.

Keywords: Spray in crossflow; supersonic crossflow; liquid injection; injectors; evaporation (search for similar items in EconPapers)
Date: 2024
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DOI: 10.1142/S0129183124501456

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