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ENCIT 2022
19th Brazilian Congress of Thermal Sciences and Engineering
Estimation of heat convection coefficient in a solid propellant rocket motor nozzle
Submission Author:
Arthur Mendonça de Azevedo , RJ
Co-Authors:
Arthur Mendonça de Azevedo, Elisan dos Santos Magalhães, Humberto Machado
Presenter: Humberto Machado
doi://10.26678/ABCM.ENCIT2022.CIT22-0437
Abstract
During the gas flow inside a rocket nozzle, it is essential to estimate the internal wall heat flux to assure that the nozzle structure can resist the heat load. The convection coefficient between the gas and the wall can be estimated through the Bartz equation and then used to obtain the temperature profile in the nozzle wall. The Bartz equation is employed in this work to estimate the heat convection coefficient and the resulting temperature field in the S-30 rocket nozzle. A sensibility analysis is performed to verify the equation accuracy, and the numerical results are compared with experimental measurements, presenting coherent results. The methodology proved to be applicable for the nozzle structure dimensioning.
Keywords
rocket nozzle, Bartz equation, sensibility analysis, heat convection coefficient
