在流延薄膜的生产过程中,熔融聚合物从模头挤出后在流延辊上冷却的过程对流延薄膜的质量起着至关重要的作用。选取双进双出的矩形截面螺旋形流道的流延辊为研究对象,在利用F luent对其换热过程进行数值模拟仿真的基础上,分析研究流延辊的流道结构和尺寸参数对流延辊换热能力的影响,所得结果可为合理设计流延辊的结构、优化流延辊的参数提供指导。 During the production of cast film, the cooling of the molten polymer on the casting roll after extrusion from the die plays a crucial role in the quality of the cast film. Based on the numerical simulation of the heat transfer process by F luent, the structure of flow channel and size parameter convection of casting roll were analyzed. The effect of the heat transfer capacity of the roller, the results obtained can provide a reasonable guide for the design of the structure of the casting roller and the optimization of the parameters of the casting roller.