Numerical simulations of the flow in a GOX/HTPB hybrid rocket engine are carried out with a Reynolds averaged Navier-Stokes solver including detailed gas surface interaction modeling based on mass and energy balances. Fuel pyrolysis and heterogeneous reactions at the nozzle wall are modeled via finite-rate Arrhenius kinetics. Global mechanisms are considered for the gas-phase chemistry for the combustion of 1,3-butadiene in oxygen. Results show the role of the gas-phase chemistry modeling and surface boundary condition modeling on the solution. The coupling between the mixing and combustion processes in the flowfield and the thermochemical erosion of a graphite nozzle is finally discussed, showing the effect of the temperature and chemical species distributions in the wall region.
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Titolo: | CFD analysis of hybrid rocket Flowfields including fuel pyrolysis and nozzle erosion |
Autori: | |
Data di pubblicazione: | 2013 |
Serie: | |
Handle: | http://hdl.handle.net/11573/524523 |
ISBN: | 9781624102226 9781627488976 |
Appartiene alla tipologia: | 04b Atto di convegno in volume |