The paper individually from the macroscopic view discussed the transfusion law of the loose coal mass with different air gap distribution and different particle distribution.

Using many parameters such as porosity,shale volume and some others acquired from conventional well logs and NMR log,a three-pore-components evaluation theory and its interpretation methods were established based on conventional well log.

In a D300?mm jetting fluidized bed with a three-nozzle distributor, the voidage distribution was simulated by two fluid model combined with kinetic theory of granular flow.

The gas-solid fluid dynamic characteristics mainly including voidage distribution, pressure distribution, gas velocity and particle velocity, have deep influence upon combustion, heat transfer, pollutant formation and control in the Circulating Fluidized Bed (CFB) boiler and they also affect the stability and economy of the equipment performance.