摘要
利用CFD流体计算软件建立了炉内传热模型,并耦合氧化铁皮计算程序计算钢坯氧化烧损率,流动模型采用k-ε湍流模型,燃烧采用PDF燃烧模型,辐射换热模型采用离散坐标(DO)辐射模型。模拟常规工况与试验工况下的炉内气氛,结果表明,常规工况下加热制度不合理,高温区氧的体积分数高达8%,而试验工况下可使高温区氧的体积分数降低为1.2%;氧化烧损的计算表明,试验工况下可使钢坯氧化烧损率由0.895 1%降低至0.51%;试验工况的现场应用测试表明:试验工况下可使钢坯氧化烧损率降低47%。
A furnace heat transfer model has been developed for the problem of optimization of the furnace atmosphere, which includes the k-ε two-equation model for turbulentct flow, Discrete Ordinates model for radiative heat transfer and the PDF combustion model for gaseous reaction. The simulated results show that; conventional heating system is unreasonable for its concentrations of oxygen which up to 8%, and the experimental beating system is reasonable for its concentrations of oxygen reduced to 1.2 % in high-temperature region in the furnace, which can reduce the rate of oxidation of the slabs from 0. 8951 % to 0.51 %. The experimental test show that; the simulated results can reduce the rate of oxidation of the slabs for 47%.
出处
《钢铁研究学报》
CAS
CSCD
北大核心
2010年第11期11-14,共4页
Journal of Iron and Steel Research
关键词
加热炉
钢坯
氧化烧损
数值模拟
炉内气氛
reheating furnace
slab
oxidation loss
numerical simulation
furnace atmosphere
