A three-step reduced mechanism was applied to compute fuel-rich methane-air turbulent diffusion flame properties to save calculation time. Good agreement was obtained between computed and measured values on temperature, CO, and CO2 distributions in the combustor except for the near flame front. It was difficult to compute very perturbed areas like a flame front because the k-ε2-equation model was modeled based on isotropic turbulence and isothermal fields. Good agreement was also obtained for CO distribution that was formed well in fuel-rich conditions by using three-step reduced mechanism. It was impossible to compute CO distribution using one-step reduced mechanism, which is mainly used in combustion simulation. Numerical simulation using the three-step reduced mechanism is a more effective method of computing the characteristics of turbulent diffusion flame because of the ability to compute a local fuel-rich condition. Original is an abstract.
|Number of pages||7|
|Journal||Journal of Chemical Engineering of Japan|
|Publication status||Published - 2000 Apr|
- One-step reduced mechanism
- Three-step reduced mechanism
- Turbulent diffusion flame