气体流动烟可视化技术是研究气体流动与换热的重要方法之一,它是在流场中加入少量烟,并在普通光的照射下,将流动图象显示出来的一种方法。这种实验不需高精密度的仪器设备,投资低,实验结果直观,易说明问题。本文介绍了我们研制的封闭腔内孤立体自然对流烟可视化实验台及在其上得到的一些结果。该实验台亦可用于实验教学。 Gas Flow Smoke visualization technology is one of the important methods to study gas flow and heat transfer. It is a method of adding a small amount of smoke to the flow field and displaying the flow image under the irradiation of ordinary light. This experiment does not require high-precision equipment, low investment, experimental results intuitive, easy to explain the problem. This paper presents a visual experiment platform of natural convection smoke with closed internal solitary body and some results obtained on it. The test bench can also be used for experimental teaching.