TY - CHAP
T1 - Simulation Analysis of Liquid Oxygen Effects in Hydrogen–Oxygen Torch Ignitor
AU - He, Yunqin
AU - Yang, Lili
AU - Wang, Xijie
AU - Wang, Xiaoli
AU - Liang, Guozhu
N1 - Publisher Copyright:
© The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2026.
PY - 2026
Y1 - 2026
N2 - To study whether there is liquid oxygen in the hydrogen–oxygen torch igniter and further study the influence law of liquid oxygen droplet diameter, simulations were carried out based on k-ε, EDC, and DPM models. The simulation results between the pressure boundary condition and the mass boundary condition of the oxygen inlet of the igniter are much different from the experimental values, which proves that liquid phase oxygen exists in the oxygen inlet. The impact of varying oxygen droplet diameters is analyzed by simulations, including 1 μm, 10 μm, 50 μm, 100 μm, 500 μm, 700 μm, 1000 μm, and 1500 μm. The simulation results show that the igniter outlet temperature rises as the oxygen droplet diameter increases when it is not fully evaporated. The oxygen-fuel ratio mainly determines the outlet temperature of the igniter and is little affected by the inlet oxygen phase state. The igniter outlet temperatures in all the conditions exceed 1000 K, ensuring successful ignition of the main engine.
AB - To study whether there is liquid oxygen in the hydrogen–oxygen torch igniter and further study the influence law of liquid oxygen droplet diameter, simulations were carried out based on k-ε, EDC, and DPM models. The simulation results between the pressure boundary condition and the mass boundary condition of the oxygen inlet of the igniter are much different from the experimental values, which proves that liquid phase oxygen exists in the oxygen inlet. The impact of varying oxygen droplet diameters is analyzed by simulations, including 1 μm, 10 μm, 50 μm, 100 μm, 500 μm, 700 μm, 1000 μm, and 1500 μm. The simulation results show that the igniter outlet temperature rises as the oxygen droplet diameter increases when it is not fully evaporated. The oxygen-fuel ratio mainly determines the outlet temperature of the igniter and is little affected by the inlet oxygen phase state. The igniter outlet temperatures in all the conditions exceed 1000 K, ensuring successful ignition of the main engine.
KW - Hydrogen–oxygen combustion
KW - Liquid oxygen
KW - Torch ignitor
UR - https://www.scopus.com/pages/publications/105017954233
U2 - 10.1007/978-981-96-6235-7_29
DO - 10.1007/978-981-96-6235-7_29
M3 - 章节
AN - SCOPUS:105017954233
T3 - Springer Aerospace Technology
SP - 283
EP - 292
BT - Springer Aerospace Technology
PB - Springer Science and Business Media Deutschland GmbH
ER -