Abstract

The three dimensional cross-sectional particle concentrations of particle-liquid two phase flows in the two cross-section of microchannel has been reconstructed using process electrical capacitance tomography (ECT) method. The capacitances between 12 multilayer electrodes in the two cross-section of the microchannel are measured by a high speed multiplexer and a capacitance measurement system. The comparison between the qualitative result of 3D reconstruction image and the quantitative result of particle concentration in flow direction transition is that the particle is reasonably distributed in the particle injected area of the cross-section. Also, cross-sectional images of the particle distribution of particle-liquid two phase flow are compared to results obtained from computer numerical simulations. The cross-sectional particle concentration calculated by the Eular-Lagrangina numerical simulation reasonably agrees with that from the 3D reconstruction image by ECT.