塑料薄膜与流延辊换热过程的模拟分析

作者：李福森，王栓虎*，李欣兴，杨晓青 日期：2010-09-08/span> 浏览：3661 查看PDF文档

塑料薄膜与流延辊换热过程的模拟分析

李福森，王栓虎*，李欣兴，杨晓青
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(南京理工大学 机械工程学院，江苏 南京 210094)
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摘要：为实现流延辊辊面温度场的均匀性和稳定性，保证塑料薄膜的高质生产，应用Fluent软件对双向回流式螺旋流道的流延辊的换热过程进行了数值模拟；分析了流延膜在流延辊上冷却时的导热、对流、辐射综合的非稳态传热过程，了解了流延膜冷却过程中的传热机理，得出了流延辊内部流道结构、冷却水的流量对流延辊换热强度的影响趋势。研究结果表明，该研究可以为流延辊结构的合理设计、流道参数的优化提供指导。
关键词：流延辊；塑料薄膜；传热；数值模拟；冷却机理
中图分类号：TH122；TH123;TQ337.1
文献标识码：A文章编号：1001-4551(2010)08-0056-04

Simulation and analysis of heat transfer process of casting film and chill roll
LI Fu-sen, WANG Shuan-hu, LI Xin-xing, YANG Xiao-qing
(School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China)
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Abstract: Aiming at realizing the uniformity and stability of the surface temperature field of the casting roller, ensuring the high quality production of plastic film, the casting roller which included double inlet and outlet spiral path was given a numerical simulation of heat transfer process by Fluent software. The comprehensive non-steady state heat transfer process which including heat conduction, convection and radiation was analyzed. The process of the film cooling was researched for heat transfer mechanism. The heat transfer intensity of the casting roller which was affected by the internal flow channel structure of the casting roller and the flow of the cooling water was analyzed and researched for the influence trends. The results indicate that the analysis can provide guidance for designing casting roller reasonably and optimizing the channel parameter.
Key words: casting roller; plastic film; heat transfer; numerical simulation; cooling mechanism