Effect of Spatial Sensitivity of Sensor on Particulate Velocity Measurement Derived Based on Cross Correlation Techniques

The cross-correlation method plays a very important role in velocity measurement of pneumatically conveyed particles. There are still gaps in understanding of the mechanism and significance of sensor’s spatial sensitivity on this method, which is the focus of this paper. Quantitative evaluations were conducted on a 330.2mm diameter electrostatic sensor under different velocity profiles based on the spatial sensitivity obtained through experiments. From this investigation, it is apparent that the difference between the theoretical velocity and measured velocity can be significant.