TY - JOUR
T1 - A diffuse interface method for simulating the dynamics of premixed flames
AU - Sun, Kai
AU - Yang, Sheng
AU - Law, Chung K.
N1 - Funding Information:
The work was performed at Princeton University under the partial sponsorship of NSF. Kai Sun was a visiting student from Tianjin University supported by the China Scholarship Council (No. 201406250099). We thank Prof. Tianyou Wang of Tianjin University for facilitating the visit of KS.
Publisher Copyright:
© 2015 The Combustion Institute.
PY - 2016/1/1
Y1 - 2016/1/1
N2 - A diffuse interface method for simulating dynamics of premixed flames is proposed. The flame is treated as a diffuse moving front with its propagation automatically captured by the convection-diffusion equation of the progress variable. The diffusion and reaction terms are constructed using the flame speed and flame thickness, and the flame speed is taken as a function of the local stretch rate to incorporate the stretch effect. This equation is coupled with the continuity equation and the momentum equation to describe flame dynamics in complex flows, and the lattice Boltzmann method is employed in the present study as the computational platform, since its feature of explicit computation is highly consistent with the advantage of flame auto-capturing of the present method. To test the performance of the method, simulations including 1-D flame propagation, 2-D Darrieus-Landau instability, 2-D cylindrical flame propagation with stretch effect, and 2D flame-vortex interaction are conducted, and the consequent results are in good agreement with analytical solutions.
AB - A diffuse interface method for simulating dynamics of premixed flames is proposed. The flame is treated as a diffuse moving front with its propagation automatically captured by the convection-diffusion equation of the progress variable. The diffusion and reaction terms are constructed using the flame speed and flame thickness, and the flame speed is taken as a function of the local stretch rate to incorporate the stretch effect. This equation is coupled with the continuity equation and the momentum equation to describe flame dynamics in complex flows, and the lattice Boltzmann method is employed in the present study as the computational platform, since its feature of explicit computation is highly consistent with the advantage of flame auto-capturing of the present method. To test the performance of the method, simulations including 1-D flame propagation, 2-D Darrieus-Landau instability, 2-D cylindrical flame propagation with stretch effect, and 2D flame-vortex interaction are conducted, and the consequent results are in good agreement with analytical solutions.
KW - Diffuse interface
KW - Lattice Boltzmann method
KW - Numerical simulation
KW - Premixed flames
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U2 - 10.1016/j.combustflame.2015.10.027
DO - 10.1016/j.combustflame.2015.10.027
M3 - Article
AN - SCOPUS:84949651906
SN - 0010-2180
VL - 163
SP - 508
EP - 516
JO - Combustion and Flame
JF - Combustion and Flame
ER -