燃油浮法玻璃熔窑富氧燃烧火焰空间的三维图象模拟

【作者】 王小隶；

【导师】 沈锦林；

【作者基本信息】 浙江大学 ， 材料加工工程， 2003， 硕士

【摘要】 本文系统阐述了国内外玻璃熔窑火焰空间中燃烧过程研究方法的发展，在综合浮法玻璃熔窑理论和实际作业过程的基础上，建立了具有实用意义的燃油浮法玻璃熔窑富氧燃烧火焰空间的三维数学模型。模型包括气相流动与传热模型和雾化油滴燃烧的轨道模型。前者用SIMPLE算法求解，其中方程包括连续性方程，动量方程，湍流模型方程和能量守恒方程；后者用单元内颗粒源法来处理，将颗粒对气相的影响作为源相加给气相。 程序采用Fortran语言在微软的PowerStation平台上进行开发，按模块化进行结构设计，便于模型功能扩充和完善，并且具有较强的通用性。为便于计算结果的直观化，以计算机图形学为基础，利用Stanfordgraphic作图软件丰富的拟合功能，将数值模拟得到的计算结果用图像来拟合，从而更为直观地表示富氧燃烧温度场分布和气流的运动情况，实现计算结果的可视化。 课题结合实例研究了日产400吨燃油浮法玻璃熔窑富氧燃烧火焰空间的温度分布情况和气体的流动情况。本模型中，富氧助燃气体的氧含量是27％，用纯氧作为燃油的雾化介质送入。从模拟图像可以看出，该三维数学模型能够比较客观的反映玻璃熔窑富氧燃烧的火焰空间的温度场分布和气体流场的分布规律，对富氧燃烧技术发展具有较大的实用价值；程序设计合理，收敛性良好，而且具有改变参数容易的优点。同时，三维数值图像模拟技术由于具有直观、明了的表示数值计算的结果等优点，在玻璃熔窑的研究中，被广泛的采纳和应用。更多还原

【Abstract】 This thesis reviewed systematically the development of research methods,especially numerial simulation ,for the combustion process of the glass melting furnace,and established the three-dimensional oxygen-firing mathematical model which is very practical in oil fired float glass furnaces on the base of theory of glass melting furnaces and industrial application.The model consisted of gas turbulent flows and heat transfer sub-model and spray combustion sub-model.The former includes continuity equation, momentum equation,turbulence equation and energy equation, and it was solved by SIMPLE scheme. The PSIC method was taken by the later model.The program was developed modularization with Fortran & PowerStation,and could be easily enriched.In order to express the results clearly,the date was fitted by the Stanfordgraphic drawing software.In this paper, the flow field and temperature distribution space in oil fired float glass furnaces(400t/d) were studied.In the model, the oxygen was the percent of 27 in the gas,poured into the glass melting furnace as the atomization medium of the fuel.It was concluded that this model could express objectively the law of the flow field and temperature distribution space in oil fired float glass furnaces.The model fitted the practical work conditions perfectly,and owned practical value.The program was reasonable and could be easily enriched.Therefore,the three-dimensional image simulation would be applied widely in the research of glass furnaces.更多还原