摘要
盛有压缩气体的气罐通过出口孔排出气体的速度有多大，笔者借助流管概念，建立热动态模型，根据能量变化关系，得出规律性结论。
How much is the velocity of discharged gas-flow through the vent of tank that contains compressed gas We use the concept of flow-tube to build a thermodynamic model and reach a conclusion of regularity from the change of energy. The result is very useful in the application.
关键词
流管
压缩气体
气罐
气流速度
热力学
Flow-tube
Thermodynamic equilibria
Molar heat capacity
Ratio of heat capacities
