本文详细论述了流体瞬变过程中气体释放的物理过程以及三个必不可少的条件。根据气泡动力学、理想气体方程和气体扩散理论,建立了适用于均匀模型的气体释放速率的公式。电算模拟取得了与典型的实测曲线较一致的结果。本公式与C.Kranenburg建议的公式相比较在理论上和实用上都有着明显的进步。 This article discusses in detail the physical process of gas release during fluid transients as well as the three essential conditions. According to bubble dynamics, ideal gas equation and gas diffusion theory, a formula of gas release rate suitable for homogeneous model is established. Computer simulation made with the typical measured curve more consistent results. Compared with the formula proposed by C. Kranenburg, this formula has obvious progress both theoretically and practically.