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Taitel流型判别法较全面地考虑了流型转变的因素,并可根据管道的特点直接确定流型,适用于较宽广的管径和物理性质范围。但是该方法需要分别指定气相和液相的速度,而供水系统中管道入口处没有指定连续的气体输入量,因此不能使用流型判别法直接进行判断。本文引用漂移流模型概念,根据对气体运动模型的推导,提出了供水系统中的气液两相流模型的判别方法及实现流程,并举例分析该方法的应用。
The Taitel flow discrimination method considers the factors of flow pattern change more fully and directly determines the flow pattern according to the characteristics of the pipe and is suitable for a wide range of pipe diameters and physical properties. However, this method requires the specification of the gas phase and the liquid phase, respectively, whereas the supply system does not specify a continuous gas input at the pipe entrance and therefore can not be directly judged by the flow patterning method. In this paper, we introduce the concept of drift flow model. Based on the derivation of gas movement model, we present a method of discriminating gas-liquid two-phase flow in water supply system and its implementation process. The application of the method is illustrated.