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An efficient multi-fluid-mixing model for real gas reacting flows in liquid propellant rocket engines
- Publication Year :
- 2016
-
Abstract
- This paper introduces a new model for real gas thermodynamics, with improved accuracy, performance, and robustness compared to state-of-the-art models. It is motivated by the physical insight that in non-premixed flames, as encountered in high pressure liquid propellant rocket engines, mixing takes place chiefly in the hot reaction zone among ideal gases. We developed a new model taking advantage of this: When real fluid behavior only occurs in the cryogenic oxygen stream, this is the only place where a real gas equation of state (EOS) is required. All other species and the thermodynamic mixing can be treated as ideal. Real fluid properties of oxygen are stored in a library; the evaluation of the EOS is moved to a preprocessing step. Thus decoupling the EOS from the runtime performance, the method allows the application of accurate high quality EOS or tabulated data without runtime penalty. It provides fast and robust iteration even near the critical point and in the multiphase coexistence region. The model has been validated and successfully applied to the computation of 0D phase change with heat addition, and a supercritical reactive coaxial LOX/GH 2 single injector.
- Subjects :
- Injection
Real gas
General Chemical Engineering
Computation
Cryogenic
General Physics and Astronomy
Energy Engineering and Power Technology
Thermodynamics
02 engineering and technology
Real-fluid
01 natural sciences
010305 fluids & plasmas
law.invention
0203 mechanical engineering
law
0103 physical sciences
Supercritical
Cryogenic oxygen plant
Chemistry
Liquid-propellant rocket
General Chemistry
Injector
Mechanics
Supercritical fluid
Ideal gas
020303 mechanical engineering & transports
Fuel Technology
Rocket
Coaxial
Subjects
Details
- Language :
- English
- Database :
- OpenAIRE
- Accession number :
- edsair.doi.dedup.....d9971fef9b2a7ccc1665e5ca90199431