Journal ArticleDOI
A two-eddy theory of premixed turbulent flame propagation
R.G. Abdel-Gayed,Derek Bradley +1 more
Reads0
Chats0
TLDR
In this article, the authors surveyed available experimental data on the turbulent burning velocity of premixed gases and discussed the accuracy of experimental measurements and the means of ascertaining relevant turbulent parameters.Abstract:
Available experimental data on the turbulent burning velocity of premixed gases are surveyed. There is discussion of the accuracy of experimental measurements and the means of ascertaining relevant turbulent parameters. Results are presented in the form of the variation of the ratio of turbulent to laminar burning velocities with the ratio of r.m.s. turbulent velocity to laminar burning velocity, for different ranges of turbulent Reynolds number. A two-eddy theory of burning is developed and the theoretical predictions of this approach, as well as those of others, are compared with experimentally measured values.read more
Citations
More filters
Journal ArticleDOI
Laminar Flamelet Concepts in Turbulent Combustion
TL;DR: In this article, it is shown that the inner structure of the flamelets is one-dimensional and time dependent, and a new coordinate transformation using the mixture fraction Z as independent variable leads to a universal description.
Journal ArticleDOI
Turbulent flame speed and thickness: phenomenology, evaluation, and application in multi-dimensional simulations
Andrei Lipatnikov,Jerzy Chomiak +1 more
TL;DR: Several models have been suggested utilizing this approach and the first laboratory and industrial applications of them have shown encouraging results as mentioned in this paper, and these successful applications motivate a thorough discussion and further development of the approach.
Journal ArticleDOI
A power-law flame wrinkling model for LES of premixed turbulent combustion Part I: non-dynamic formulation and initial tests
TL;DR: In this article, a model of turbulent sub-grid scale flame speed for premixed combustion is proposed and tested in Large Eddy Simulation (LES), based on writing the unresolved flame surface density in terms of a general power-law expression that involves an inner cutoff scale.
Journal ArticleDOI
Turbulent burning velocities: a general correlation in terms of straining rates
TL;DR: In this article, a dimensionless power spectral density function is presented, and used to show how both effective r.m.s. turbulent velocity and flame straining rate develop in an explosion.
Journal ArticleDOI
Molecular transport effects on turbulent flame propagation and structure
Andrei Lipatnikov,Jerzy Chomiak +1 more
TL;DR: In this paper, the effects of molecular transport on turbulent flame propagation and structure are critically discussed and the results of relevant studies of perturbed laminar flames (unstable flames, flame balls, flames in vortex tubes) are reviewed.
References
More filters
Journal ArticleDOI
Flames: Their Structure, Radiation and Temperature
TL;DR: The second edition of Gaydon and Wolfhard's book as mentioned in this paper has been thoroughly sifted to bring the frontier information up-to-date with the rapid expansion of combustion science in and over many fields in the last decade.
Journal ArticleDOI
Dependence of turbulent burning velocity on turbulent reynolds number and ratio of flaminar burning velocity to R.M.S. turbulent velocity
R.G. Abdel-Gayed,Derek Bradley +1 more
TL;DR: In this paper, the double kernel method was used to measure premixed hydrogen-air turbulent burning velocities, made by four high speed fans within the explosion vessel during explosions.
Related Papers (5)
Effects of molecular diffusion and of thermal expansion on the structure and dynamics of premixed flames in turbulent flows of large scale and low intensity
P. Clavin,Forman A. Williams +1 more