摘要：为了探索选粉机转子能耗的影响因素,通过理论分析推导气相与气-固两相流时转子转动转矩和功率公式,并推导喂料量、风量和转速单因素变量时转矩和功率的变化趋势;为了进一步验证理论推导的正确性,采用数值模拟方法分析单因素变量下转矩和功率的变化规律。结果表明:根据推导出的气相与气-固两相流时转子转动转矩和功率公式,选粉机转子能耗的影响因素主要是喂料量、风量和转速;数值模拟结果与理论推导相吻合。

关键词：选粉机；转子能耗；数值模拟

Abstract： To explore the influence factors of energy consumption of classifier rotors， the rotor rotational torque and rotational power formula of gas phase and gas -solid two phase flow were derived by theoretical analysis. The change trends of torque and power were concluded with the single factor variable of feed， air flow and rotational speed. To verify the correctness of the theoretical derivation， the change rules of torque and power with the single factor variable were analyzed by numerical simulation. The results show that the major influence factors of energy consumption of the classifier rotors are feed， air flow and rotational speed according to the rotor rotational torque and rotational power formula of gas phase and gas -solid two phase flow. The numerical simulation results match with the theoretical derivation. 

Keywords: classifier； energy consumption of rotor； numerical simulation