基于CFD的滚筒搅拌器的冷却模拟研究

Research on Cooling Simulation of Drum Stirrer Based on CFD

以滚筒搅拌器为研究对象,通过CFD软件模拟仿真,通过稳态模拟考察冷却空气流量对冷却效果的影响情况,通过正交模拟实验考察进口颗粒温度、空气总流量以及内壁冷却空气的比例三种因素对冷却效果的影响情况。分析结果表明,冷却空气总流量大于等于50m^(3)/h时,设备就可以完成50℃以下的冷却目标;颗粒温度、空气流量是影响设备冷却效果的最主要因素;冷却时间大于50s后,物料就可以达到冷却平衡。基于该分析结果,对滚筒搅拌器工作的工艺参数进行优化,同时也为设备的结构设计改进提供思路,提高了设备的工作效率。

With a drum mixer as the research object,a CFD(Computational Fluid Dynamics)software was used to perform simulation analysis.Through steady-state simulations,the influence of cooling air flow rate on the cooling effect was investigated.Orthogonal simulation experiments were conducted to assess the impact of three factors—inlet particle temperature,total air flow rate,and the proportion of cooling air to the inner wall—on the cooling effect.The analysis results revealed that when the total cooling air flow rate is greater than or equal to 50m^(3)/h,the equipment can achieve a cooling target below 50°C.Particle temperature and air flow rate were identified as the most significant factors influencing the cooling efficiency of the equipment.Furthermore,when the cooling time exceeds 50s,the material can reach a cooling equilibrium.Based on these findings,the process parameters for the drum mixer's operation were optimized,providing insights for structural design improvements and enhancing the equipment's operational efficiency.