摘要
为解决常规风洞雷诺数模拟不足的问题，采用低温风洞已被证明是一条可行的途径。目前世界上几乎所有运转的低温风洞都是采用液氮气化吸热方法来降低和保持试验气体的温度。对于大型低温风洞，这种制冷方案存在着运转费用高昂和环境污染的缺点。为克服上述缺点，俞鸿儒院士提出了一种用空气作试验气体，藉热分离器制冷并回收排气冷量的新型低温风洞的概念。此原理性风洞的研制就是要从其基本原理、设计特点及实验结果等方面来验证和探讨这种新概念的可行性和应用前景。
Since there are the defects of high operation cost and air pollution in existing cryogenic wind tunnels refrigerated by liquid nitrogen， a scheme of a new type of air cryogenic wind tunnel was put forward. In order to verify the feasibility of the scheme and study related techniques，a pilot research facility was established. This paper gives a brief description of its principle，design features and preliminary experimental results.
出处
《流体力学实验与测量》
CSCD
2000年第3期66-72,共7页
Experiments and Measurements in Fluid Mechanics
基金
国防科技预研基金!(94J13A.1.3.KG29)
关键词
低温风洞试验
制冷
热分离器
热交换器
cryogenic wind tunnel；refrigeration；thermal separator；heat exchanger
