Flow of Incompressible Two-Phase Mixtures through Sharp-Edged Orifices:
Flow of Incompressible Two-Phase Mixtures through Sharp-Edged Orifices:
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DOI：
10.1243/jmes_jour_1967_009_011_02
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发表时间：
1967-02
期刊：
影响因子：
--
通讯作者：
D. Chisholm
中科院分区：
文献类型：
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作者：
D. Chisholm
在气体或液体通过孔口的密度变化可以忽略不计的条件下，建立了气-液或气-液混合物通过锐边孔口的流动方程。理论发展与之前的处理方法不同，考虑到了相之间的界面剪切力，并得出了一个与现有实验证据非常吻合的方程。通过实验确定表征管道和孔口布置的单个系数，可以预测给定压降和气液重量比的两相流速和相速度比。检查的条件范围涵盖气体与总混合物的重量比从 0·1 到 98%，以及下游与上游压力比大于 0·99。两相流数据的关联精度现已接近单相流的精度。
Equations are developed for the flow of gas-liquid or vapour-liquid mixtures through sharp-edged orifices under conditions where the density change of the gas or liquid through the orifice is negligible. The theoretical development differs from previous treatments in allowing for the interfacial shear force between the phases, and leads to an equation which is shown to be in good agreement with available experimental evidence. The determination by experiment of a single coefficient characterizing the pipe and orifice arrangement permits the prediction of both the two-phase flow rate and the ratio of the phase velocities for a given pressure drop and gas-liquid weight ratio. The range of conditions examined extends over weight ratios of gas to total mixture from 0·1 to 98 per cent, and ratios of downstream to upstream pressures greater than 0·99. The accuracy of correlation of two-phase flow data is now approaching that of single-phase flow.