人们知道在四川盆地的西北部,有一座誉为“中国西部科学城”的绵阳市,那里有为我国的航空航天事业作各种高空气流摸拟试验的风洞群,具有世界第三、亚洲第一之称。当你沿着成昆铁路南下273公里,就到达了佛教圣地峨眉山了,这里也有一座风洞,即西南交大在峨眉山麓建起的一座我国最大的工业风洞,简称SNJD—1风洞。 风洞是研究物体的空气动力特性的地面试验设备。试验时,把摸型或实物置于风洞之中,利用人造气流,测定并研究空气在物体周围流动时所产生的作用(如升力、空气对物体的阻力、物体表面压强的分布等)。风洞的种类很多,按试验风速的大小,可分为低 People know that in the northwestern part of the Sichuan Basin there is a Mianyang City known as the “Science City of Western China,” where there are wind tunnel clusters for various high-altitude air flow simulations for China’s aerospace undertakings, with the third largest population in the world The first one. When you go down 273 kilometers south of Chengkun Railway, you reach Emei Mountain, a sacred site of Buddhism. There is also a wind tunnel here, one of the largest industrial wind tunnels in China, called SNJD-1 wind tunnel, at the foot of Mount Emei at the Southwest Jiaotong University. Wind tunnels are ground test equipment that studies the aerodynamics of objects. During the test, the touch or object is placed in the wind tunnel and the artificial air flow is used to measure and study the effect of the air flowing around the object (such as lift, air resistance to the object, distribution of pressure on the surface of the object, etc.). Many types of wind tunnel, according to the size of the test wind speed can be divided into low