Does flame-generated vorticity increase turbulent burning velocity?
Artikel i vetenskaplig tidskrift, 2018
Direct numerical simulation data obtained from a statistically stationary, 1D, planar, weakly turbulent, premixed flame, which is associated with the flamelet combustion regime, are analyzed in order to show that generation of vorticity due to baroclinic torque within flamelets can impede wrinkling the reaction surface, reduce its area, and decrease the burning rate. These data call for revisiting the widely accepted concept of combustion acceleration due to flame-generated turbulence.
flame-generated turbulence
thermal expansion
DNS
combustion acceleration
premixed turbulent burning
Författare
Andrei Lipatnikov
Chalmers, Mekanik och maritima vetenskaper, Förbränning och framdrivningssystem
Vladimir Sabelnikov
Office national d'etudes et de recherches aerospatiales (ONERA)
Shinnosuke Nishiki
Kagoshima University
Tatsuya Hasegawa
Nagoya University
Physics of Fluids
1070-6631 (ISSN) 1089-7666 (eISSN)
Vol. 30 8 081702Styrkeområden
Transport
Energi
Fundament
Grundläggande vetenskaper
Ämneskategorier
Strömningsmekanik och akustik
DOI
10.1063/1.5046137