基于FLUENT的磨损试验机磨料流场模拟和试验验证

Flow field simulation of wear machines′ mix mechanism based on FLUNET and experimental verification

为了研究磨损试验机搅拌机构混合磨料的均匀度问题,应用计算流体力学软件FLUENT对磨损试验机磨料流场进行了模拟,直观显示了工作区内的流场特性和速度分布规律。对桨叶直径分别为10,15,20 cm及桨叶转速分别为450,600,750 r/min等不同参数下的磨损试验机磨料流场进行了模拟。结果显示,桨叶直径为20 cm,桨叶转速为750 r/min时为最佳工作状态。通过调节桨叶的转速及更换不同直径的桨叶,对实际搅拌的面粉和麸皮混合磨料进行了对比试验,试验结果与模拟结果基本吻合。

Aiming at the uniformity problem in the process of mixing abrasive of wear machines＇ mix mechanism, the properties of flow fields and laws of speed of the working areas are simulated based on FLUENT software and shown di- rectly. The flow field while the diameter of blade is 10 cm, 15 cm,20 cm and the rotating rating is 450 r/min,600 r/min, 750 r/min are simulated, the simulation results show that the diameter of blade is 20 cm and rotating rating at 750 r/min is the best working status. Based on adjusting the blades＇ rotating rating with changing blades＇ diameter, comparison ex- periments were conducted under the condition of different parameters, the experiments and simulation results are basically identical.