【摘要】 本文用数值方法分析了封闭空间自然对流与导热、辐射的复合换热。得到了边壁导热效应和内壁面间辐射换热对自然对流流动和换热的影响。辐射换热量可占总换热量的30％左右,它的作用是不容忽视的。数值解的结果与用激光差分干涉系统实验的结果基本一致。更多还原

【Abstract】 Using numerical method, natural convection in enclosure combined with conduction ana radiation is analyzed in this paper. The influence of the walls surrounding the enclosure and interaction of natural convection with radiation between the surfaces of the walls are considered. The fraction of radiation heat transfer rate is about 30%. The influence of interaction of radiation can’t be neglected specially in the case of lower Grashof number. The numerical results is in agreement with the experimental results obtained by Laser differential interferometric device.更多还原