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开发一种数学模型,用于预测HDPE管道在合接过程中的平均融区厚度
Donghu Zeng1, Maksym Iurzhenko1, Valeriy Demchenko1
1Department of Plastics Welding, E.O. Paton Electric Welding Institute of the National Academy of Sciences of Ukraine, 03150 Kyiv, Ukraine.
Polymers
|July 30, 2025
概括
一个新的数学模型准确地预测了接接过程中高密度聚乙烯 (HDPE) 管道的平均化区 (AMZ) 厚度. 这种高效的模型降低了成本,并改进了实验和CFD方法.
科学领域:
- 材料科学 材料科学 材料科学
- 聚合物工程 聚合物工程
- 制造过程 制造过程 制造过程
背景情况:
- 在HDPE管道接中确定融区厚度对于接质量至关重要.
- 目前的方法,包括实验和数值模拟,往往是昂贵和低效的.
- 需要一个更有效,更准确的预测模型,用于融区厚度.
研究的目的:
- 开发一种高效的数学 (MM) 模型,用于预测HDPE管道的平均化区 (AMZ) 厚度.
- 将热对流效应纳入MM模型.
- 使用二维计算流体动力学 (CFD) 模型验证MM模型.
主要方法:
- 根据诺伊曼的溶解开发了一个基于溶解半无限区域的数学模型.
- 使用有限元分析 (FEA) 构建了一个二维的CFD模型进行验证.
- 分析了加热温度 (190-350°C),加热时间 (180秒) 和热对流的影响.
主要成果:
- 证明了MM和CFD模型对AMZ厚度的预测之间存在很强的相关性.
- 报告的MM和CFD模型之间的相对错误在0.280%到10.830% (有对流) 和-2.398%到8.992% (没有对流) 之间.
- 发现热对流对大直径,厚壁HDPE管道的AMZ厚度预测的影响最小.
结论:
- 开发的数学模型提供了一种可靠和高效的方法来预测HDPE管道融区厚度.
- MM模型为传统的实验和CFD方法提供了具有成本效益的替代方案.
- 该研究证实热对流对特定HDPE管道尺寸的AMZ厚度的影响最小.
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