Large-Eddy Simulations of a sub-scale liquid rocket combustor: influence of fuel injection temperature on thermo-acoustic stability
Résumé
The present work aims at the prediction of high frequency combustion instabilities in cryogenic rocket engines using Large Eddy Simulation (LES). The sub-scale rocket combustor BKD from DLR has 42 coaxial injectors fed with liquid oxygen and gaseous hydrogen operating at conditions representative of full-scale engines. The combustor is found to be stable for low hydrogen injection temperatures and unstable for higher ones. The LES solver is first validated on the Mascotte test-bench from ONERA. Two BKD cases are then simulated, corresponding to naturally stable and unstable regimes in the experiment. The recent progresses and results are described and analyzed.
Domaines
Milieux fluides et réactifs| Origine | Fichiers produits par l'(les) auteur(s) |
|---|