Prediction of heat release effects on a mixing layer
A fully second-order closure model for turbulent reacting flows is suggested based on Favre statistics. For diffusion flames the local thermodynamic state is related to single conserved scalar. The properties of pressure fluctuations are analyzed for turbulent flows with fluctuating density. Closure models for pressure correlations are discussed and modeled transport equations for Reynolds stresses, turbulent kinetic energy dissipation, density-velocity correlations, scalar moments and dissipation are presented and solved, together with the mean equations for momentum and mixture fraction. Solutions of these equations are compared with the experimental data for high heat release free mixing layers of fluorine and hydrogen in a nitrogen diluent.
- Research Organization:
- Sverdrup Technology, Inc., Cleveland, OH (USA)
- OSTI ID:
- 5454230
- Report Number(s):
- N-86-23857; NASA-CR-175044; E-2845; CONF-860130-7
- Country of Publication:
- United States
- Language:
- English
Similar Records
Turbulence modulation in jet diffusion flames: Modeling and experiments
Effects of radiative heat transfer on the turbulence structure in inert and reacting mixing layers
Related Subjects
400800* -- Combustion
Pyrolysis
& High-Temperature Chemistry
42 ENGINEERING
420400 -- Engineering-- Heat Transfer & Fluid Flow
ALLOYS
DATA
ELEMENTS
FLAME PROPAGATION
FLUID FLOW
FLUORINE
HALOGENS
HYDROGEN
INFORMATION
MATHEMATICAL MODELS
NITROGEN ADDITIONS
NONMETALS
NUMERICAL DATA
THEORETICAL DATA
TURBULENT FLOW