Abstract A current problem is to understand the injection, mixing and combustion in typical liquid rocket engines and combustion chambers conditions. Until now, only H2/LOx injection and combustion has been investigated deeply, while there is a lack in experimental data and numerical studies in literature on LOX/CH4 combustion, and it is not possible to transfer concepts design from LOX/H2 injector to LOX/CH4 injector. At typical injection conditions H2 is far in the supercritical region and shows in a good approximation ideal gas behavior. Methane however is near critical and real gas effects are to be taking into account in the mixing process. The prediction of all thermodynamic properties depend on the equation of state chosen. In the present work CFD simulations have been performed for the simulation of supercritical LOx- CH4 spray using the Soave-Redlick- Kwong and the Peng Robinson equations of state.
Real Fluid Modelling of Supercritical Reacting Flows in Liquid Rocket Engine
DE GIORGI, Maria Grazia;FICARELLA, Antonio
2009-01-01
Abstract
Abstract A current problem is to understand the injection, mixing and combustion in typical liquid rocket engines and combustion chambers conditions. Until now, only H2/LOx injection and combustion has been investigated deeply, while there is a lack in experimental data and numerical studies in literature on LOX/CH4 combustion, and it is not possible to transfer concepts design from LOX/H2 injector to LOX/CH4 injector. At typical injection conditions H2 is far in the supercritical region and shows in a good approximation ideal gas behavior. Methane however is near critical and real gas effects are to be taking into account in the mixing process. The prediction of all thermodynamic properties depend on the equation of state chosen. In the present work CFD simulations have been performed for the simulation of supercritical LOx- CH4 spray using the Soave-Redlick- Kwong and the Peng Robinson equations of state.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
