摘要
采用有限体积法计算了轴对称圆柱形介质以及立方体简化炉膛内的辐射传输问题,计算结果与离散传递法、蒙特卡洛法的结果相吻合.重点分析了不同网格离散划分方法(FVM1,FVM2和FVM3)对温度场、投射热流、净热流分布等计算精度的影响,同时考察了不同的角度离散格式(天顶角均匀划分法FA1,天顶角余弦均匀划分法FA2和圆周角4n式划分法FA3)与计算精度的关系.结果表明,采用FA3划分方案得到的计算结果较精确,而FA1和FA2方案结果误差较大,因此建议采用FA3方案进行角度离散.
The radiative heat transfer in axisymmetric cylindrical media and the rectangular ideal furnace are studied by means of the finite volume method （FVM）. Compared with the results of the Monte Carlo （MC） method and the discrete transfer method （ DTM）, the reliability of our FVM code is proven. At the same time, the influence of different grid schemes （FVM1, FVM2 and FVM3 ） on the temperature field precision, incident flux, radiative net flux and computational time in cylindrical absorbing and scattering media are analyzed, respectively. The relationship between solid angle discrete schemes （FA1, FA2 and FA3 ） and the precision are studied as well. The results show that the FA3 solution is more accurate than FA1 and FA2. FA3 is therefore suggested for use in calculating the radiative heat transfer by FVM.
出处
《哈尔滨工业大学学报》
EI
CAS
CSCD
北大核心
2005年第12期1621-1623,1724,共4页
Journal of Harbin Institute of Technology
基金
国家自然科学基金资助项目(50276014)
哈尔滨工业大学跨学科交叉性研究基金资助项目(HIT.MD.2001.14)
关键词
辐射传递
有限体积法
离散格式
radiation heat transfer
finite volume method
discrete schemes
