Numerical Analysis of Flow Field in Ceramic Filter During Pulse Cleaning

In the commercial utilization of rigid ceramic filters, the performance of pulse cleaning has crucial effectson the long-term stable operation. In order to get a clear insight into the nature of this cleaning process and providea solid basis for industrial applications, the flow in ceramic candle filter was investigated. The flow in the pulse-jetspace and inside the ceramic candle is regarded as two- dimensional, unsteady, compressible flow, and numericalsimulation is carried out by computational fluid dynamics. The numerical predictions of flow field are in goodagreement with the experimental measurements. Effects of the candle diameter, the separation distance betweenthe nozzle and the candle injector and the length of the candle on the flowfield have been numerically analyzed toprovide the basis for the optimum design of the pulse cleaning system.