简述了数值模拟手段对冶金炉热工设备的设计和优化的重要意义 ,并以某钢厂蓄热式加热炉为对象 ,按照 1∶1的比例建立三维物理模型 ,利用κ-ε湍流模型、耦合混合燃烧模型、辐射换热模型以及NOx 生成模型对其进行非稳态数值模拟研究。结果表明 :蓄热式加热炉能获得很好的流场、温度场和浓度场分布 ,满足高质量的钢坯加热需要 The importance of numerical simulation means to the design and optimization of metallurgical furnace thermal equipment is briefly described. A three-dimensional physical model is established according to a ratio of 1: 1 in a steel regenerative heating furnace. By using κ-ε turbulence model , Coupled hybrid combustion model, radiation heat transfer model and NOx generation model were studied by unsteady numerical simulation. The results show that regenerative heating furnace can obtain good flow field, temperature field and concentration field distribution to meet the needs of high quality billet heating