摘要
利用有限体积法对控制方程进行离散,并采用非结构化网格划分流动区域,对某大型渗碳炉喷嘴内及其周围区域流场进行了数值模拟研究.分别比较分析了两种不同结构喷嘴在渗碳炉内所形成的流场和温度场分布,探讨了不同流量工况对喷嘴周围流场和温度场的影响.计算结果表明:多孔喷嘴比简单的单孔喷嘴能更好地组织起渗碳炉内的流场和温度场,不同的流量工况对于渗碳环境有较大的影响.本文的模拟结果对渗碳炉的设计和生产具有一定的指导意义.
In this paper,fluid flow as well as heat transfer was analyzed using computational fluid dynamics（CFD） simulation for the regions nearby and inside of nozzle in the carburizing furnace.The governing equations were discretized using the finite volume method.The unstructured grids were used to deal with the irregularity of computational domain.Flow patterns and temperature distributions of two types of nozzles with different structure were analyzed and compared.Moreover,the influence of different flow rate on fluid flow and temperature fields were simulated and discussed.According to the results,it is indicated that the flow pattern and temperature distributions with multi-hole nozzle are more desirable for the requirement of carburizing process than those with a simple solo-hole nozzle.Flow rate of carburizing gas affects the process of carburizing treatment greatly.These simulation results are expected to provide valuable references to the design optimization and manufacturing of carburizing furnace.
出处
《材料与冶金学报》
CAS
2011年第3期231-236,共6页
Journal of Materials and Metallurgy
基金
国家科技重大专项项目(2009ZX04008-021)
中央高校基本科研业务费专项资金资助项目(N090402005)
关键词
渗碳炉
喷嘴
流动
传热
数值模拟
carburizing furnace
nozzle
fluid flow
heat transfer
numerical simulation
