Analysis and investigation of various liquid propellant injectors with a critical view

Document Type : full paper

Authors

• Khayam NiKosh ¹
• kouros nekoufar ²
• zahra ghaderi ³
• vahideh shefaei heris ⁴

¹ Islamic Azad University, Ayatollah Amoli Branch, Mazandaran, Iran

² Islamic Azad University, Chalous Branch,

³ Aerospace Research Institute, Ministry of Science, Research and Technology

⁴ master student

Abstract

The main part of each combustion engine is the fuel injector or the injectors plate. In order to optimize and control the oxidizing and reducing process in a liquid fuel engine, the formation of the compounds and the factors affecting it is known. In this research, it has been tried to investigate various parameters such as mixing ratio, spraying rate, the arrangement of nozzles in the spray pattern of the region, and the depth of penetration by modeling the RD-170 engine spray process, which is a high-performance liquid rocket motor.
Assuming that the inner flow rate of the nozzle is low and the turbulence assumption is used for flow modeling, the Ansys CFX is used to solve the equations with the number of 1000 repetitions for the problem convergence. Four case studies were used in this study. Liquid fuel spray contours without combustion chamber indicate that by decreasing the ratio of fuel mixture and oxidants to the mass of increased fuel mass, which leads to an increase in the speed of the core of the fuel cone and its atomization and its better mixing with the oxidant, the penetration depth also increases with the speed of the core The cone increases

Keywords

• Injector
• Propulsion
• Propellant
• Spray cone

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