Abstract: A liquid crystal technique was used to investigate the temperature profile in an agitated tank equipped with a PBT impeller.Four sets of vertical tubes were symmetrically fixed in the agitated tank with diameter of 500?mm.A mixture of cholesteric liquid crystals was dispersed homogeneously in glycerol.The effects of time,rotation speeds on the temperature profile were discussed.The commercial CFD code CFX- 4.3 was used to simulate the axial and radial temperature profiles in the tank.And the results of the simulation were compared to the experimental data.The CFD predictions are in good with eperimental data.

摘要： 在装有 4组对称垂直加热列管、直径为 5 0 0mm的搅拌槽中使用PBT桨进行搅拌 ,以甘油为工作物料 ,采用液晶测温技术测量搅拌槽内温度的分布 .实验研究了温度随时间的变化以及搅拌转速对温度分布的影响 .采用计算流体力学软件CFX - 4对槽内轴向、径向温度分布进行数值模拟 ,并将模拟结果与实验结果进行了比较 ,发现二者基本符合.