Statistics of Scalar Dissipation and Strain/Vorticity/Scalar Gradient Alignment in Turbulent Nonpremixed Jet Flames
Sign Up to like & getrecommendations! Published in 2019 at "Flow, Turbulence and Combustion"
DOI: 10.1007/s10494-019-00044-w
Abstract: Turbulence and mixing statistics are investigated in a set of flames at a jet Reynolds number of 15000 achieving a Taylor’s scale Reynolds number in the range 100 ≤Reλ ≤ 150. In particular, the impact on… read more here.
Keywords: vorticity; scalar dissipation; jet; turbulence ... See more keywords
Impact of molecular mixing and scalar dissipation rate closures on turbulent bluff-body flames with increasing local extinction
Sign Up to like & getrecommendations! Published in 2019 at "Combustion and Flame"
DOI: 10.1016/j.combustflame.2019.04.039
Abstract: Abstract Bluff-body turbulent CH4: H2 (1:1) flames at 50% (HM1), 75% (HM2) and 91% (HM3) of the blow-off velocity (235 m s − 1 ) were studied experimentally by Masri and co-workers and found to exhibit gradually… read more here.
Keywords: local extinction; scalar dissipation; molecular mixing; bluff body ... See more keywords
A Lagrangian fluctuation–dissipation relation for scalar turbulence. Part I. Flows with no bounding walls
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Fluid Mechanics"
DOI: 10.1017/jfm.2017.567
Abstract: An exact relation is derived between scalar dissipation due to molecular diffusivity and the randomness of stochastic Lagrangian trajectories for flows without bounding walls. This ‘Lagrangian fluctuation–dissipation relation’ equates the scalar dissipation for either passive… read more here.
Keywords: scalar dissipation; dissipation; relation; dissipation relation ... See more keywords