Paper accepted by Combustion and Flame

Our recent work on high pressure spherical flame was accepted by Combustion and Flame.

The effect of finite molecular volume on the propagation of unsteady spherical flame front

Zifeng Weng , Yakun Zhang , Brian M. Maxwell , and 1 more author

Combustion and Flame, 2024

@article{SphericalFlame2024,
  title = {The effect of finite molecular volume on the propagation of unsteady spherical flame front},
  author = {Weng, Zifeng and Zhang, Yakun and M. Maxwell, Brian and M{\'e}vel*, R{\'e}my},
  year = {2024},
  journal = {Combustion and Flame},
  volume = {263},
  pages = {113404},
}

This work investigated the propagation of spherical flame at high pressure conditions at which the effect of finite molecular volume is non-negligible. By using asymptotic analysis and numerical simulation, we demonstrated that the non-ideal effect leads to higher flame speed at quasi-steady state and to lower Markstein number compared to the perfect gas based solutions. Strategies for high-pressure laminar flame speed extrapolation were discussed and the relative uncertainty related to the finite volume effect is of 20-45% over the total uncertainty for pressures in the range 1-2.5 MPa, indicating that effect of finite molecular volume cannot be neglected to determine the laminar flame speed under such pressure conditions.