Eventos Anais de eventos
COBEM 2017
24th ABCM International Congress of Mechanical Engineering
Flow Analysis Inside the Combustion Chamber and the Nozzle of a Hybrid Rocket Motor
Submission Author:
Paulo Gabriel Cunha Martins , SP
Co-Authors:
Olexiy Shynkarenko, Paulo Gabriel Cunha Martins
Presenter: Paulo Gabriel Cunha Martins
doi://10.26678/ABCM.COBEM2017.COB17-0990
Abstract
The main objective of this work is the numerical validation of the hybrid rocket prototype developed by UnB Chemical Propulsion Laboratory (CPL) team. This rocket motor can be used in the SARA Orbital project during the induction of an atmospheric reentry maneuver in a low orbit. For this, some theoretical and numerical methods were developed to perform mass and energy flow analysis in the combustion chamber and nozzle. The initially used theoretical method was the fuel regression empirical model to calculate the behavior of the fuel port diameter throughout the firing time. With the results of this theoretical method, the numerical analysis of the behavior of the fluid including the combustion process in different time intervals was done. The numerical analysis aims to show a complete development of the compressible non-viscous and viscous flows with the combustion of nitrous oxide/paraffin propellants pair. The simulation results obtained by using ANSYS Fluent showed good correspondence with the analytical approach. At the current paper, the numerical simulation results were analyzed and discussed, for the better understanding of the behavior of the processes in the combustion chamber, and future validation of the modeling by the CPL experimental data.
Keywords
solid fuel regression, rocket nozzle, combustion chamber., hybrid rocket motor, Flow Simulation
