大型管式加热炉燃烧传热CFD数值模拟

摘要

A state computational fluid dynamics (CFD)model was developed to predict the combustion and heat transfer of a large tube furnace.The model studied the three-dimensional numerical simulation of combustion,flow,heat and mass transfer process,by using k-εturbulent flow model,composition PDF transport model and DO radiation model.The CFD simulations reflect chaotic hydrodynamics flow in furnace.The predicted results were in good agreement with the industrial process data. This model provided the theoretical reference for designing and optimizing furnace.%为了研究大型管式加热炉内部流动、传热和传质情况，采用计算流体力学的方法对石化行业中广泛应用的大型加热炉炉膛内部进行了数值模拟，用标准的k-ε湍流模型描述烟气湍流情况，非绝热的简化 PDF燃烧模型计算了燃烧情况，离散坐标辐射传热模型对炉膛内辐射传热状况进行模拟。计算结果和工业运行数据吻合较好，模拟计算结果为大型加热炉优化设计提供了理论指导。