Low-liquid-loading flow in wet-gas pipelines is a common occur- rence in the transport of raw gas. The most important parameters governing the flow behavior are pipe geometry (inclination angle and diameter), operating conditions (flow rate, pressure, and tem- perature), and physical properties of the gas and liquid (density, vis- cosity, and surface tension). In this study, extensive experiments were conduced with a test loop made of 50.1 mm diameter acrylic pipe with inclination angles form the horizontal of -2 deg., -1 deg., 0 deg., 1 deg., and 2 deg.
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