沉浸有限元法用于多层热保护系统中的热传递分析
1College of Integrative Studies, Abdullah Al Salem University, Khaldiya, Kuwait.
Science progress
|June 26, 2025
概括
这项研究模拟了航天器的热保护系统,优化材料和厚度以进行传热. 沉浸式有限元素方法有效地分析了多层性能,以改进航天器设计.
科学领域:
- 航空航天工程 航空航天工程
- 材料科学 材料科学 材料科学
- 计算力学 计算力学 计算力学
背景情况:
- 航天器热保护系统 (TPS) 需要坚固的设计来承受极端温度.
- 优化TPS材料成分和层厚度对于任务成功和安全至关重要.
- 通过多层,异性质材料进行热传递的准确建模,带来了重大的计算挑战.
研究的目的:
- 开发和验证用于分析多层空间飞船TPS中的热传递的数学模型.
- 研究材料特性和层厚度对TPS的热性能的影响.
- 评估沉浸有限元方法 (iFEM) 对于复杂的TPS模拟的适用性.
主要方法:
- 基于热方程的数学模型被用于多层TPS.
- 沉浸有限元法 (iFEM) 用于解决热方程,熟练地处理材料不连续性.
- 在一个代表性的三层TPS上进行了模拟,其中包括碳复合材料,陶和绝缘泡.
主要成果:
- 该研究量化了不同材料特性和层厚度对传热特性的影响.
- 模拟结果显示,根据材料选择和结构配置,热性能存在显著差异.
- iFEM方法在准确捕捉材料界面的热行为方面被证明是有效的.
结论:
- 材料选择和精确的厚度优化是提高航天器TPS热性能的关键因素.
- 沉浸有限元法是一种强大而高效的工具,用于模拟多材料航空航天结构中的热传递.
- 这些发现为设计和开发下一代航天器热管理解决方案提供了宝贵的指导.
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