【摘要】 为降低气力输送能耗，本文通过在输送管道侧壁增添辅助进气形成旋流气力输送，并采用计算颗粒流体力学（computational particle flow dynamics,CPFD）方法进行数值模拟。针对辅助进气的3个结构参数（进气速度、倾斜角度、相邻辅助进气距离）和目标值（功率消耗系数）进行单因素爬坡实验。采用响应面法设计多组中心实验，对3个结构参数进行多目标优化。结果表明，当主进气速度为13m/s时，添加进气速度为8m/s、进气角度为45°、相邻辅助进气距离为1250mm的辅助进气，可有效降低水平管道压降。将此工况与主进气速度为13m/s、15m/s、17m/s且不加辅助进气的工况进行比较，发现功率消耗系数分别降低了10.59%、35.36%、34.81%。更多还原

【Abstract】 In this study, cyclonic pneumatic conveying was achieved by installing an additional air intake on sidewall of the conveying pipeline to reduce the energy consumption of pneumatic conveying. The computational particle fluid dynamics(CPFD) approach was employed for numerical simulation. Three auxiliary intake structural parameters(intake velocity, tilt angle, and separation between adjacent auxiliary intakes) and the target value(power consumption coefficient) were subjected to a one-factor hillclimbing test. A multi-group central experiment for multi-objective optimization of three structural parameters was designed using response surface methods. The results indicated that the horizontal pipe pressure drop could be effectively reduced by incorporating an auxiliary intake with an intake velocity of 8m/s, an intake angle of 45°, and an adjacent auxiliary intake distance of 1250 mm when the main intake velocity was 13m/s. Compared to systems operating at main intake velocities of 13m/s, 15m/s and 17m/s without auxiliary intakes, the power consumption coefficients were reduced by 10.59%, 35.36%, and 34.81%, respectively.更多还原