气液两相段塞流是液塞和长气泡在时间和空间上的交替,是一种不稳定流,在油气混输中经常遇到的流型,其对管道、管件及下游设备和安全生产造成隐患。本文介绍了段塞流研究现状,对于弯管中段塞流的研究方法—实验研究和数值模拟及其研究过程做了着重的介绍,并提出两种方法现在存在的问题和不足。这样对于弯管中段塞流产生的机理及流动特性的研究有一定的帮助。 Gas-liquid two-phase slug flow is a time-space alternation of liquid slugs and long bubbles. It is a kind of unstable flow which is often encountered in oil-gas mixing and transportation. It has a great influence on the pipelines, fittings and downstream equipment and safety Production risks. This paper introduces the research status of slug slugs, introduces the research methods of middle slug slugs - experimental research, numerical simulation and research process, and puts forward the existing problems and shortcomings of the two methods. This is of some help to the research on the mechanism and flow characteristics of slug flow in the middle of elbow.