Experiments on Gas-Liquid Flow in Vertical Pipes

A comprehensive database on upward two-phase flows in vertical pipes was obtained using the wire-mesh sensor technologies for gas-liquid flows in vertical pipes. The investigations were done for different pipe diameter as well as for flows with and without phase transfer. Wire-mesh sensors provide detailed information on the structure of the gas-liquid interphase. Basic characteristics of gas-liquid flows can be observed in such experiments and are discussed in this chapter. The quantitative results obtained in the measurements as radial volume fraction profiles, radial gas velocity profiles, bubble size distributions, distributions of interfacial area density, and others are valuable data for the development and validation of Computational fluid dynamics (CFD) codes for multiphase flows.