CAJ | 학술논문

为了研究预混气在多孔介质内过滤燃烧特性，根据多孔介质燃烧理论，建立了甲烷/空气预混气在堆积床内燃烧的二维双温模型。给出了当量比、入口速度和小球直径等参数对温度分布的影响，分析了燃烧器内氧化铝小球的蓄热特性。结果表明：火焰面的前缘呈抛物线形状，燃烧波波速在0．1 mm/s数量级；随着当量比增加，波速度减小，燃烧区域范围扩大；随着入口流速增大，燃烧最高温度升高，火焰面宽度变窄，燃烧波波速增大；随着氧化铝小球直径增大，火焰面厚度变窄，燃烧波速度增大；氧化铝小球在过滤燃烧中体现出良好的蓄热能力。
위료연구예혼기재다공개질내과려연소특성，근거다공개질연소이론，건립료갑완/공기예혼기재퇴적상내연소적이유쌍온모형。급출료당량비、입구속도화소구직경등삼수대온도분포적영향，분석료연소기내양화려소구적축열특성。결과표명：화염면적전연정포물선형상，연소파파속재0．1 mm/s수량급；수착당량비증가，파속도감소，연소구역범위확대；수착입구류속증대，연소최고온도승고，화염면관도변착，연소파파속증대；수착양화려소구직경증대，화염면후도변착，연소파속도증대；양화려소구재과려연소중체현출량호적축열능력。
In order to study the premixed filtration combustion characteristics of a porous medium, a two-dimensional combustion model of premixed gas in a porous medium was established based on the theory of porous medium combus-tion. The influences of the equivalence ratio, the intake velocity and the spherule diameter on temperature distribution were discussed. The heat storage properties of the alumina spherule in the burner were analyzed. The results show that the front edge of the flame presents a parabola structure and the combustion wave velocity has an order of 0.1 mm/s. The burning area extends and the combustion wave velocity decreases with the increasing of the equivalence ratio. Higher peak temperature, narrower flame width and faster combustion wave velocity occur as the inlet velocity increa-ses. The flame width gets narrower and the combustion wave velocity increases with the increasing of the spherule di-ameter. The alumina spherule shows a good heat storage capacity in the premixed filtration combustion.