Numerical Simulations of Vortex-Acoustic Coupling in Two-Phase Flow of VKI Motor

Chao Huo, Tengfei Luo, Peijin Liu

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

2 Scopus citations

Abstract

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.

Original languageEnglish
Title of host publication2022 13th International Conference on Mechanical and Aerospace Engineering, ICMAE 2022
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages384-389
Number of pages6
ISBN (Electronic)9781665472357
DOIs
StatePublished - 2022
Event13th International Conference on Mechanical and Aerospace Engineering, ICMAE 2022 - Bratislava, Slovakia
Duration: 20 Jul 202222 Jul 2022

Publication series

Name2022 13th International Conference on Mechanical and Aerospace Engineering, ICMAE 2022

Conference

Conference13th International Conference on Mechanical and Aerospace Engineering, ICMAE 2022
Country/TerritorySlovakia
CityBratislava
Period20/07/2222/07/22

Keywords

  • combustion instability
  • large eddy simulation
  • two-phase flow
  • vortex shedding
  • vortex-acoustic coupling

Fingerprint

Dive into the research topics of 'Numerical Simulations of Vortex-Acoustic Coupling in Two-Phase Flow of VKI Motor'. Together they form a unique fingerprint.

Cite this