Numerical Simulation of Infrared Heating and Ventilation before Stretch Blow Molding of PET Bottles

IF 2.6 3区材料科学 Q2 ENGINEERING, MANUFACTURING International Journal of Material Forming Pub Date : 2023-06-02 DOI:10.1007/s12289-023-01763-2

Thanh Tung Nguyen, Yun-Mei Luo, Luc Chevalier, Alain Baron, François Lesueur, Françoise Utheza

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Abstract

The initial temperature of the preform has an important influence on the stretch and blowing step of the process to produce PET bottles. A complete 3D modelling of the heat part of the stretch blow molding machine including meshing is a long and complex task. Solving Navier Stokes equation coupled with the thermal problem takes more than one week using ANSYS/Fluent software. The numerical simulation of infrared (IR) heating taking into account the ventilation effect is very time-consuming. This work proposes a simplified approach to achieve quickly the numerical simulation in order to have an estimation of the temperature distribution in the preform. In this approach, the IR heating flux coming from IR lamps and the ventilation model are calculated in a semi analytical way and are applied as the boundary conditions of the simulation in COMSOL where only the preform is meshed. This approach is validated by comparing our numerical results with the experimental temperature distribution of PET preform.

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PET瓶拉伸吹塑前红外加热与通风的数值模拟

预成型的初始温度对PET瓶生产工艺的拉伸和吹制步骤有重要的影响。包括网格划分在内的拉伸吹塑机热部件的完整三维建模是一项漫长而复杂的任务。使用ANSYS/Fluent软件求解带有热问题的Navier Stokes方程需要一周多的时间。考虑通风效果的红外加热数值模拟非常耗时。本文提出了一种简化的方法来实现快速的数值模拟，以便对预成形中的温度分布进行估计。该方法以半解析的方式计算了来自红外灯的红外热通量和通风模型，并将其作为COMSOL模拟的边界条件，其中仅对预成形进行了网格划分。通过将数值计算结果与实验温度分布进行比较，验证了该方法的有效性。

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来源期刊

International Journal of Material Forming ENGINEERING, MANUFACTURING-MATERIALS SCIENCE, MULTIDISCIPLINARY

CiteScore

5.10

自引率

4.20%

发文量

审稿时长

>12 weeks

期刊介绍： The Journal publishes and disseminates original research in the field of material forming. The research should constitute major achievements in the understanding, modeling or simulation of material forming processes. In this respect ‘forming’ implies a deliberate deformation of material. The journal establishes a platform of communication between engineers and scientists, covering all forming processes, including sheet forming, bulk forming, powder forming, forming in near-melt conditions (injection moulding, thixoforming, film blowing etc.), micro-forming, hydro-forming, thermo-forming, incremental forming etc. Other manufacturing technologies like machining and cutting can be included if the focus of the work is on plastic deformations. All materials (metals, ceramics, polymers, composites, glass, wood, fibre reinforced materials, materials in food processing, biomaterials, nano-materials, shape memory alloys etc.) and approaches (micro-macro modelling, thermo-mechanical modelling, numerical simulation including new and advanced numerical strategies, experimental analysis, inverse analysis, model identification, optimization, design and control of forming tools and machines, wear and friction, mechanical behavior and formability of materials etc.) are concerned.