垂直管中聚碳酸酯气力输送的数值模拟

he pneumatic conveying process of vertical tube of the PC pilot production device has been conducted the preliminary numerical simulation with adopting gas-solid two-fluid continuum model, combining particle dynamics method and using computational fluid dynamics method. According to comprehensive influence of transport pressure drop and investment costs, the optimum calculated pipe diameter is 50mm. In satisfying the maximum transmission capacity circumstances, reducing diameters is helpful to improve the solid/gas ratio, to reduce energy consumption, and to increase economic efficiency. Calculated the pressure drop of different conveying gas velocity. Conveying gas velocity corresponding to the least pressure drop is best economic speed which increases with the increasing of conveying throughput, and the attachment of the best economic speed point of the different conveying throughput is the best economic speed line.