On the basis of the results of natural experiments and numerical calculations on computer models, physical peculiarities of drying of biomass loose materials (loose wood, peat granules, etc.) are analysed in a fluidized bed with low-frequency pulsing input of the drying agent (air). A computer stand is developed for numerical experiments on the basis of modern CAD/CAE programs, allowing to model the geometry of the drying unit, the dynamics of its mobile mechanical elements, the parameters of the gas-dynamic stream with recurrent pulses of the charge and pressure, the operating characteristic of the centrifugal blower depending on the geometry of the blading and the resistance of the gas-dynamic section. Characteristic features of the pulsing wavy stream created by a pulsator are investigated; the forms of pulses of pressure, speed and density in all sections of the drying unit are determined. The results of numerical calculations are confirmed by the data of natural experiments.
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