Slug flow is an intermittent and complex gas-liquid flow pattern, that can cause severe
problems in industrial operations and lead to large uncertainties in multiphase flow
metering. These problems are primarily caused by the liquid slugs of the flow. In this context,
different cases of slug flow in horizontal pipes are investigated to find a statistical
characterization of the slugs in time and space. To achieve this, snapshot proper orthogonal
decomposition (snapshot POD) with an additional mode coupling algorithm is employed …