"flame density" is a correct and usable phrase in written English
You can use it when referring to the intensity of a flame, usually in scientific or engineering contexts. For example, "The flame density of the furnace must be monitored to prevent the risk of an explosion."
It combines the flame surface density (FSD) approach with a presumed probability density function (PDF) of the progress variable that is used in FPI chemistry tabulation.
Combustion is then either modeled by tracking the flame surface density or by combining computations of flamelets with presumed probability density functions (pdf).
The performance of four different flame surface density (FSD) models, earlier used by Duclos et al. [1] for studying flame propagation in constant density frozen turbulence, and that of the reaction progress variable approach of Bray and Moss (BM) is evaluated by comparison with existing experimental data.
Effects of the wall on flame surface density are investigated.
The flame surface density is in agreement with the aforementioned flame front curvature PDFs in that increasing the pressure and hydrogen concentration leads to an increase in the maximum flame surface density.
A transport equation for the filtered flame surface density is presented, and models are proposed for unclosed terms.
Flame surface density (FSD) and curvature were determined to characterise the unforced flames.
The aim of this paper is to explore the usefulness of the flame surface density concept as a basis for LES modeling of premixed turbulent combustion.
The predictions are compared with flame surface density (FSD) and OH∗ chemiluminescence measurements.
There is only one ad hoc parameter in the LES model, which is used to account for unresolved subgrid scale increase of flame surface density outside the enclosure.
