Flame temperature analysis in the oxycut process using acetylene gas: a numerical study

• Autor(a) principal: Silva, Gustavo L. S.
• Data de Publicação: 2020
• Outros Autores: Campos, Júlio Cesar Costa, Silva, Charles Luiz da, Carlos, Igor R. R., Siqueira, Antonio Marcos de Oliveira, Brito, Rogério F., Minette, Luciano José
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: The Journal of Engineering and Exact Sciences
• Texto Completo: https://periodicos.ufv.br/jcec/article/view/10270
• topic: Flame Model Oxyfuel Flame Temperature Partially Premixed Combustion; Modelo de Chama; Oxicombustível; Temperatura de Chama; Pré-Mistura Parcial; Combustão

To cut metals, the oxycut process uses a preheating flame, usually composed of oxygen and a combustible gas, in addition to a flame-independent jet of oxygen. In the present work, the partially premixed combustion model of a finite volume-based software was applied to analyze the flame temperature in a cutting tip of acetylene. At the torch inlet boundary, the flow rates of oxygen and acetylene were adjusted to sweep a wide range of fuel-oxygen ratio. The results pointed a peak surrounding the stoichiometric ratio, at 3106 °C for the literature and 2650.93 °C for the numerical model, contrasting a deviation of 14.65%. The maximum temperature occurs at 52.38% of oxygen volume for the literature and 50.03% for the model, a difference of 2.35 percentage points only. It is concluded that the results of the numerical approach attained the ends of the research.