Fuel and Combustion

Fuel and Combustion

Numerical modeling and parametric analysis of the geometrical factors of combustion chamber in a solid fuel ramjet engine

Document Type : Original Article

Authors
Hamidreza Saadati 1
jamasb pirkandi 2
Jalal Mohammadi 1
Hamid Parhizkar 1
1 Faculty of Aerospace, Malek Ashtar University of Technology, Iran
2 Department of Aerospace Engineering, Maleke ashtar University
10.22034/jfnc.2024.456078.1389
Abstract
In present research the combustion process of solid fuel ramjet(SFRJ) was modeled in numerical state. Different five geometrical cases were employed for parametric study of back step height and aft-combustor length effects on propulsion properties in this numerical model. Results showed less than 10 percentage error in compare with reference data. Extracted numerical data from this research show decreasing burning rate, increasing combustion efficiency and thrust force due to increasing the step height also decreasing combustion efficiency and thrust force as results of decreasing the aft-combustor length. The results demonstrate that variation of the aft-combustor length hasn’t sensible effect on burning rate also optimum value for specific impulse occur when dimensionless aft-combustor length is equal to 0.95.
Keywords
solid fuel ramjet
combustion chamber
regression rate
step height
aft-combustor length

Subjects

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