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为精确确定水平细圆管内气液两相分相流动的界面结构，提出采用基于相平衡理论的最小能量原理分析，研究重力、界面剪切力和表面张力对气液两相流流型的影响；分析小尺度下水平圆管气液两相流动的特点。发现即使在细圆管内，相界面间的剪切力对气液两相流流型的影响依然比表面张力显著得多。利用最小能量原理提出了可预示两相系统气液界面形状的方法。
In order to accurately determine the interfacial structure of gas-liquid two-phase split-phase flow in horizontal thin circular tube, the principle of minimum energy based on phase equilibrium theory is proposed to study the influence of gravity, interface shear force and surface tension on gas-liquid two-phase flow pattern The characteristics of gas-liquid two-phase flow in horizontal pipe under small scale were analyzed. It is found that the shear forces on the interfacial interface have much more influence on the flow pattern of gas-liquid two-phase flow than the surface tension, even in a thin tube. The method of predicting gas-liquid interface shape of two-phase system is proposed by using the principle of least energy.