Measurement of discrete phase concentration and velocity in gas/solid two-phase flow

Research of the velocity, dimension, position and manifold of the gas/solid two-phase flow is of great significance, as the flow is a widely existed and complicated pattern of multiphase flows in industrial processes. In this paper, the discrete phase concentration and velocity measurement of gas/solid two-phase fluid which cocurrent flows from bottom to top in vertical pipe is simulated and studied based on the cross-correlation theory of random processes and capacitance measurement system. With Monte-Carlo method, researchers built the gas/solid two phase flow model, and studied the measure method of discrete phase concentration and velocity under “concretionary” and “non concretionary” flow pattern conditions, and analysed the influence of the configuration parameters of capacitance sensors and the velocity, flow pattern and concentration distribution of discrete phase on the cross-correlation velocity measurement system. Matlab simulation results showed that building the gas/solid two-phase flow model and studying the cross-correlation velocity measurement system with Monte-Carlo method is valid, and this method provided a reasonable and effective way to facilitate further development of discrete phase concentration and velocity measuring technique.