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EXPERIMENTAL MEASUREMENT OF GLASS TO MOLD HEAT TRANSFER FOR COMPUTATIONAL MODELING OF CONTAINER PRODUCTION

机译:玻璃对模具传热进行塑造的实验测量,用于计算建模集装箱生产

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Recent advances in numerical simulation capabilities have made the modeling of glass container forming processes feasible. These forming models must include large free surface deformations, viscoelastic behavior, conjugate heat transfer, and complex contact phenomena between the glass and the forming molds. One of the most critical inputs to these models is the heat flux between the glass and mold. A simple one-dimensional heat transfer model was developed for use in conjunction with a complex three-dimensional forming model to determine the heat flow between the glass and forming mold. Initial comparisons to experimental results indicate the simple model captures the primary physics of heat flow during forming. This paper describes an experimental effort to determine the time varying contact conductance between molten glass and container forming molds. The experimental apparatus is capable of independently varying the glass pressure, glass temperature, mold temperature, and glass type. Initial validation of the experimentally determined contact conductance function in conjunction with the one-dimensional heat transfer model utilized within a glass forming model indicate good agreement between calculated and measured results. These forming models are now able to determine final glass container properties without having to resort to the trial-and-error process currently utilized in glass container production.
机译:数值模拟能力的最新进展使得玻璃容器形成过程的建模可行。这些形成模型必须包括大的自由表面变形,粘弹性行为,缀合物传热和玻璃和成形模具之间的复杂接触现象。这些模型最关键的输入之一是玻璃和模具之间的热通量。开发了一种简单的一维传热模型,用于与复杂的三维成形模型结合使用,以确定玻璃和成型模具之间的热流。对实验结果的初始比较表明,简单的模型在成型过程中捕获了热流的主要物理。本文介绍了一种确定熔融玻璃和容器形成模具之间变化的时变形电导的实验努力。实验装置能够独立改变玻璃压力,玻璃温度,模具温度和玻璃型。实验确定的接触电导功能的初始验证结合在玻璃形成模型内使用的一维传热模型表示计算和测量结果之间的良好一致性。现在,这些形成模型能够确定最终的玻璃容器特性,而不必诉诸目前在玻璃容器生产中使用的试验和误差过程。

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