A comparison of numerical predictions of supersonic combustion of hydrogen using different chemistry models in a model combustor

K. Kumaran, V. Babu*

*Corresponding author for this work

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

1 Scopus citations

Abstract

The effect of reduced chemistry model on the numerical predictions of supersonic combustion of hydrogen in a model combustor is investigated. To this end, 3D, compressible, turbulent, reacting flow calculation with a reduced chemistry model (with 7 reactions and 7 species) has been carried out. The results are compared with earlier results obtained using the single step chemistry and detailed chemistry model. Staged injection is considered to evaluate the capability of the reduced chemistry model. Predictions of mass fractions of major species, minor species, dimensionless stagnation temperature and combustion efficiency along the combustor length are presented and discussed. Further, dimensionless wall static pressure is compared with experimental data reported in the literature. Results show that the reduced chemistry predicts the overall combustion parameters reasonably well. The heat release is predicted to be lower than that of detailed chemistry model. Also, the flow separation due to heat release is predicted to be shorter with the reduced mechanism. In this work, the difference in predictions of supersonic combustion of hydrogen with different chemistry models are discussed.

Original languageEnglish
Title of host publication47th AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition
StatePublished - 2009
Externally publishedYes
Event47th AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition - Orlando, FL, United States
Duration: 5 Jan 20098 Jan 2009

Publication series

Name47th AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition

Conference

Conference47th AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition
CountryUnited States
CityOrlando, FL
Period5/01/098/01/09

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