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Phenomenological reduced-order modeling of subcritical combustion in cryogenic rocket engines: an application to the prediction of high-frequency combustion instabilities
- Source :
- AIAA Propulsion and Energy 2020 Forum, AIAA Propulsion and Energy 2020 Forum, Aug 2020, Virtual event, United States. pp.AIAA 2020-3830, ⟨10.2514/6.2020-3830⟩
- Publication Year :
- 2020
- Publisher :
- HAL CCSD, 2020.
-
Abstract
- International audience; The set of equations governing reacting two-phase flows in liquid-propellant rocket engines is simplified and linearized around a steady base flow. In the particular case of a liquid/gas coaxial injector, models for the atomization, evaporation and combustion source terms are derived from a simplified physical description of both the oxidizer liquid core and spray. The resulting equations are projected onto a modal basis, leading to a quasi-linear dynamic description of the evolution of the system. In this paper, detailed model reduction focuses on the evaporation of polydisperse sprays and on the propagation of acoustic waves within the gas.
- Subjects :
- [PHYS]Physics [physics]
Materials science
business.product_category
business.industry
02 engineering and technology
Combustion
01 natural sciences
7. Clean energy
010305 fluids & plasmas
Reduced order
Physics::Fluid Dynamics
[SPI]Engineering Sciences [physics]
020401 chemical engineering
Rocket
0103 physical sciences
Sub critical
0204 chemical engineering
Aerospace engineering
business
Subjects
Details
- Language :
- English
- Database :
- OpenAIRE
- Journal :
- AIAA Propulsion and Energy 2020 Forum, AIAA Propulsion and Energy 2020 Forum, Aug 2020, Virtual event, United States. pp.AIAA 2020-3830, ⟨10.2514/6.2020-3830⟩
- Accession number :
- edsair.doi.dedup.....030c86890ec2daa2a1e0df576963db9a
- Full Text :
- https://doi.org/10.2514/6.2020-3830⟩