TY - GEN
T1 - Numerical Simulations of Vortex-Acoustic Coupling in Two-Phase Flow of VKI Motor
AU - Huo, Chao
AU - Luo, Tengfei
AU - Liu, Peijin
N1 - Publisher Copyright:
© 2022 IEEE.
PY - 2022
Y1 - 2022
N2 - The vortex-acoustic coupling caused by flow instability is one of the main gain factors that result in combustion instability of motors. Through taking the VKI (Von Karman Institute for Fluid Dynamics) motor as a reference model and introducing the aluminium oxide condensed particles, this paper focused on the influence study of obstacle vortex shedding on the pressure oscillation under two-phase interaction by applying Large Eddy Simulation (LES) method. Based on the analysis of two-phase flow characteristics and acoustic features in the combustion chamber, the paper revealed influences of the aluminium oxide condensed particles in VKI motor on the law of vortex movement, the pressure oscillation frequency and the pressure amplitude. The results show that, under the action of two-phase flow the vortex movement is not as clear as the one in pure-gas flow, the vortex structure becomes chaotic. Meanwhile, the dominant pressure oscillation frequency of the VKI combustor decreases, and the corresponding pressure amplitude also slightly decreases.
AB - The vortex-acoustic coupling caused by flow instability is one of the main gain factors that result in combustion instability of motors. Through taking the VKI (Von Karman Institute for Fluid Dynamics) motor as a reference model and introducing the aluminium oxide condensed particles, this paper focused on the influence study of obstacle vortex shedding on the pressure oscillation under two-phase interaction by applying Large Eddy Simulation (LES) method. Based on the analysis of two-phase flow characteristics and acoustic features in the combustion chamber, the paper revealed influences of the aluminium oxide condensed particles in VKI motor on the law of vortex movement, the pressure oscillation frequency and the pressure amplitude. The results show that, under the action of two-phase flow the vortex movement is not as clear as the one in pure-gas flow, the vortex structure becomes chaotic. Meanwhile, the dominant pressure oscillation frequency of the VKI combustor decreases, and the corresponding pressure amplitude also slightly decreases.
KW - combustion instability
KW - large eddy simulation
KW - two-phase flow
KW - vortex shedding
KW - vortex-acoustic coupling
UR - http://www.scopus.com/inward/record.url?scp=85137274785&partnerID=8YFLogxK
U2 - 10.1109/ICMAE56000.2022.9852904
DO - 10.1109/ICMAE56000.2022.9852904
M3 - 会议稿件
AN - SCOPUS:85137274785
T3 - 2022 13th International Conference on Mechanical and Aerospace Engineering, ICMAE 2022
SP - 384
EP - 389
BT - 2022 13th International Conference on Mechanical and Aerospace Engineering, ICMAE 2022
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 13th International Conference on Mechanical and Aerospace Engineering, ICMAE 2022
Y2 - 20 July 2022 through 22 July 2022
ER -