摘要
根据严重段塞流4个阶段的特点,针对L形立管系统不稳定流建立了一维准平衡态简化计算模型,其忽略摩阻和加速度的影响,立管中气相穿透过程应用漂移流模型。气相穿透、气液喷发阶段采用特征线方法求解,并引入气相密度偏移修正过程,能够对典型严重段塞流和液塞长度小于立管高度的过渡严重段塞流进行模拟。将模型计算结果与实验室结果以及其他文献的实验数据进行对比,结果表明模型能够对L形立管系统中的两相不稳定流动进行较准确的模拟。(图2,表3,参16)。
Based on the features of severe slug flow distributed in 4 stages, this paper sets up a one-dimentional quasi- equilibrium simplified calculation model for the unsteady flow in the L-type riser system, which ignores the effects of friction and acceleration, and uses the drift flow model to simulate the gas phase penetration. Characteristic method is used to solve the gas phase penetration stage and gas liquid eruption stage. The gas density offset correction is introduced to simulate the typical severe slug flow and transitional severe slug flow in which the length of the liquid slug is smaller than the height of the riser. Comparison of calculated results from the model with the laboratory results and experimental data from other literatures shows that the built model is able to make a rather accurate simulation and prediction on the two-phase unsteady flow in the L-type riser system. （2 Figures, 3 Tables, 16 References）
出处
《油气储运》
CAS
2014年第1期95-98,107,共5页
Oil & Gas Storage and Transportation
基金
国家科技重大专项"深水流动安全设计与流动管理技术"
2011ZX05026-004-03
2008ZX05030-005-12
关键词
L形立管
严重段塞流
不稳定流
瞬态
流动特性
漂移流模型
计算模拟
L-type riser, severe slug flow, unsteady flow, transient, flow characteristics, drift flow model, calculationsimulation
