Ultrafast 3D X-ray tomography of a wire-mesh sensor in operation in a two-phase flow

An ultrafast 3D X-ray tomography modality (3D-CT) has been developed in order to study highly dynamic interface structures in multiphase flows. The wire-mesh sensor (WMS) is an intrusive measurement device that quantifies the phase fraction distribution of a two-phase flow within the cross-section of a pipe or column. The WMS is a valuable low-cost imaging technique, but is known to affect the flow at low liquid superficial velocities, which leads to overestimation of the measured gas fraction. In this study, the influencing effect of a WMS on a water-air two-phase flow has been investigated in detail by simultaneous 3D-CT imaging.