Modeling Scramjet Flows with Variable Turbulent Prandtl and Schmidt Numbers

A complete turbulence model is presented in which the turbulent Prandtl and Schmidt numbers are calculated as part of the solution and in which averages involving chemical source terms are modeled. The model avoids the use of assumed or evolution probability distribution functions and thus results i...

Full description

Saved in:
Bibliographic Details
Published in:AIAA journal 2007-06, Vol.45 (6), p.1415-1423
Main Authors: Xiao, X, Hassan, H. A, Baurle, R. A
Format: Article
Language:English
Subjects:
Aerodynamics
Aircraft
Airplane engines
Algorithms
Applied sciences
Chemistry
Energy
Energy. Thermal use of fuels
Equipments for energy generation and conversion: thermal, electrical, mechanical energy, etc
Exact sciences and technology
Furnaces. Firing chambers. Burners
Gaseous fuel burners and combustion chambers
Turbulence models
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:A complete turbulence model is presented in which the turbulent Prandtl and Schmidt numbers are calculated as part of the solution and in which averages involving chemical source terms are modeled. The model avoids the use of assumed or evolution probability distribution functions and thus results in a highly efficient algorithm for reacting flows. The predictions from the model are compared with two sets of experiments involving supersonic mixing and one involving supersonic combustion. Two sets of .../air chemical kinetic mechanisms are considered: one involving 7 species and 7 reactions, the other involving 9 species and 19 reactions, with reaction rates being dependent on both pressure and temperature. The results demonstrate the need for consideration of turbulence/chemistry interactions in supersonic combustion. In general, good agreement with the experiment is indicated. (ProQuest-CSA LLC: ... denotes formulae/symbols omitted.)
ISSN:0001-1452
1533-385X
DOI:10.2514/1.26382