多孔介质预混燃烧中辐射属性影响的敏感性分析  

SENSITIVITY ANALYSIS ON THE INFLUENCE OF RADIATIVE PROPERTIES IN PREMIXED COMBUSTION IN POROUS MEDIA

作　　者：杜礼明[1,2] 解茂昭[1] 

机构地区：[1]大连理工大学动力工程系,辽宁大连116024 [2]中国科学院大连化学物理研究所

出　　处：《工程热物理学报》2005年第z1期249-252,共4页Journal of Engineering Thermophysics

基　　金：国家自然科学基金资助项目(Nos.50076005;50476073)

摘　　要：建立了惰性多孔介质中预混合燃烧的数学模型,采用辐射传递的有限体积法求解固相能量方程中的辐射源项,研究多孔介质热辐射在燃烧系统中的作用,考察辐射属性(吸收系数和散射反照率)对轴向温度场和辐射热流量影响的敏感性。研究表明,辐射属性参数波动对预测结果影响明显,固体热辐射在多孔介质预混燃烧中的影响不可忽略。A numerical model accounting for premixed combustion in inert porous media has been developed. The finite volume method is applied to solve the radiative source term in the energy equation of solid phase. A sensitivity study was performed to investigate the influence of the radiative properties (absorption coefficient and scattering albedo) on temperature profiles and radiation flux. The results show that that the predictions are greatly affected by the perturbations in the radiative properties and heat radiation of the solid should not be neglected in the modeling of premixed combustion in inert porous media.

关 键 词：多孔介质 预混合燃烧 有限体积法 辐射传热 敏感性分析 

分 类 号：TK124[动力工程及工程热物理—工程热物理]