１引言封闭方腔内多块孤立平板自然对流换热是许多电子设备散热的近似模拟，因此，了解封闭方腔内多块孤立平板的自然对流换热规律，对于电子设备的热设计具有重要的意义。国内外许多学者针对这方面的问题进行了较为广泛的研究［１－５］，许多学者研究了封闭方腔内一块或... 1 INTRODUCTION The natural convection heat transfer of many isolated plates in a closed square cavity is an approximate simulation of the heat dissipation of many electronic devices. Therefore, understanding the natural convection heat transfer of multiple isolated plates in a closed square cavity is important for the thermal design of electronic devices significance. Many scholars at home and abroad have carried out a more extensive study on this aspect [1-5]. Many scholars have studied a piece of closed square cavity or ...