【摘要】 石油、天然气开采和输运过程中大量使用管道输运。在天然气的输运过程中，常常会有凝析成份析出，构成气液两相流动。在海洋、沙漠边际油藏开采中，为了节省投资和运行费用，也倾向于采用油气混输方案。气液混输技术在石油工业中有着重要的发展前景。为了发展具有我国自主知识产权的稳态、非稳态管线气—液两相流动数值模拟软件，我们使用双流体模型，建立了一维气—液两相流动的非线性数学模型，并使用时间相关法求解了非线性方程组，对若干算例进行了数值模拟。更多还原

【Abstract】 At present, more attention has been focused on the advancement of near high GOR, offshore and ageing gas fields. In this case, the multiphase mixture transportation technique has advantages to exploit such marginal fields more economically. A primary numerical code has been developed to simulate the gas-liquid two-phase flow in the horizoantal and declined pipe to predict the pressure losses and hold-up parameters.更多还原