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Large-Eddy Simulations of the Mascotte Test Cases Operating at Supercritical Pressure
- Source :
- Flow, Turbulence and Combustion, Flow, Turbulence and Combustion, Springer Verlag (Germany), 2020, 105 (1), pp.159-189. ⟨10.1007/s10494-019-00096-y⟩
- Publication Year :
- 2020
- Publisher :
- Springer Science and Business Media LLC, 2020.
-
Abstract
- International audience; Liquid rocket, Diesel or aircraft engines may operate in the transcritical regime. In such thermodynamic conditions, the classical phase change that occurs at subcritical pressure disappears and the mixing layer between the dense and cold jet and the outer gaseous stream is characterized by large variations of density and thermodynamic properties. Fluids show strong departure from a perfect gas behavior and a real-gas formulation is needed to model the fluid state. The extension of the unstructured AVBP solver, jointly developed by CERFACS and IFPEN, to handle high-pressure thermodynamics is presented in details. It is then validated on the experimental coaxial injectors studied with the Mascotte test rig from ONERA that operate in the transcritical range, namely the LOx/GH2 cases A60 and C60 and the LOx/GCH4 configuration G2. The flame pattern observed in experiments is properly recovered, hence validating the numerical strategy. Numerical results are then discussed focusing on the role of the momentum flux ratio on the development of transcritical flames.
- Subjects :
- Materials science
General Chemical Engineering
Mixing (process engineering)
General Physics and Astronomy
transcritical regime
02 engineering and technology
Perfect gas
01 natural sciences
010305 fluids & plasmas
law.invention
[SPI]Engineering Sciences [physics]
0203 mechanical engineering
law
0103 physical sciences
Physical and Theoretical Chemistry
Jet (fluid)
Liquid-propellant rocket
[SPI.FLUID]Engineering Sciences [physics]/Reactive fluid environment
Large-Eddy Simulation
Injector
Mechanics
turbulent combustion
Solver
Supercritical fluid
020303 mechanical engineering & transports
Coaxial
Subjects
Details
- ISSN :
- 15731987 and 13866184
- Volume :
- 105
- Database :
- OpenAIRE
- Journal :
- Flow, Turbulence and Combustion
- Accession number :
- edsair.doi.dedup.....a43c7388230d4fd0ba97c446613c4463