Application of the eddy damped quasi-normal Markovian spectral transport theory to premixed turbulent flame propagation

1997 ◽  
Vol 9 (11) ◽  
pp. 3410-3430 ◽  
Author(s):  
Mark Ulitsky ◽  
Lance R. Collins
Keyword(s):  
Flame Propagation ◽  
Transport Theory ◽  
Turbulent Flame ◽  
Premixed Turbulent Flame

Comparison of a spectral model for premixed turbulent flame propagation to DNS and experiments

2000 ◽  
Vol 4 (3) ◽  
pp. 241-264 ◽  
Author(s):  
Mark Ulitsky ◽  
Chaouki Ghenaï ◽  
Iskender Gökalp ◽  
Lian-Ping Wang ◽  
Lance R Collins
Keyword(s):  
Flame Propagation ◽  
Turbulent Flame ◽  
Spectral Model ◽  
Premixed Turbulent Flame

104 Variation of flame surface density with flame propagation of spherically propagating premixed turbulent flame

2014 ◽  
Vol 2014.67 (0) ◽  
pp. _104-1_-_104-2_
Author(s):  
Tatsuya KAI ◽  
Yotaro WAKABAYASHI ◽  
Taiki TSUKAMOTO ◽  
Akira NOMO ◽  
Yukihide NAGANO ◽  
...  
Keyword(s):  
Flame Propagation ◽  
Surface Density ◽  
Turbulent Flame ◽  
Flame Surface ◽  
Flame Surface Density ◽  
Premixed Turbulent Flame

scholarly journals Turbulence Intensity and Length Scale Effects on Premixed Turbulent Flame Propagation

2021 ◽  
Author(s):  
Shrey Trivedi ◽  
R. S. Cant
Keyword(s):  
Strain Rate ◽  
Flame Propagation ◽  
Turbulence Intensity ◽  
Turbulent Flame ◽  
Integral Length Scale ◽  
Length Scale ◽  
Tangential Strain ◽  
Turbulent Flame Speed ◽  
Turbulence Length ◽  
Premixed Turbulent Flame

AbstractThe effects of varying turbulence intensity and turbulence length scale on premixed turbulent flame propagation are investigated using Direct Numerical Simulation (DNS). The DNS dataset contains the results of a set of turbulent flame simulations based on separate and systematic changes in either turbulence intensity or turbulence integral length scale while keeping all other parameters constant. All flames considered are in the thin reaction zones regime. Several aspects of flame behaviour are analysed and compared, either by varying the turbulence intensity at constant integral length scale, or by varying the integral length scale at constant turbulence intensity. The turbulent flame speed is found to increase with increasing turbulence intensity and also with increasing integral length scale. Changes in the turbulent flame speed are generally accounted for by changes in the flame surface area, but some deviation is observed at high values of turbulence intensity. The probability density functions (pdfs) of tangential strain rate and mean flame curvature are found to broaden with increasing turbulence intensity and also with decreasing integral length scale. The response of the correlation between tangential strain rate and mean flame curvature is also investigated. The statistics of displacement speed and its components are analysed, and the findings indicate that changes in response to decreasing integral length scale are broadly similar to those observed for increasing turbulence intensity, although there are some interesting differences. These findings serve to improve current understanding of the role of turbulence length scales in flame propagation.

Sign in / Sign up

Export Citation Format

Share Document