Influence of thermal expansion on potential and rotational components of turbulent velocity field within and upstream of premixed flame brush
Paper in proceedings, 2019
fluctuations in the flow. Such effects are documented not only within the mean flame brush, but also well upstream of it. The effect magnitude is increased by the density ratio sigma, with the effects being well (weakly) pronounced at sigma=7.53 (2.50, respectively). Moreover, the potential and rotational velocity fields can cause opposite variations of the local area of an iso-scalar surface c(x,t)=const within flamelets by generating the local strain rates of opposite signs.
Förbränning och sprejer
ONERA Centre de Palaiseau
Moscow State University
Proceedings of the Eleventh Mediterranean Combustion Symposium, MCS11
Fluid Mechanics and Acoustics