基于仪表室结构的单维相变传热特性研究
Jiabin Zhao1,2, Longbin Liu3,4, Mingkun Li1,2
1College of Aerospace Science and Engineering, National University of Defense Technology, Changsha, 410073, China.
Scientific reports
|July 27, 2024
概括
换相材料在高速飞行期间有效地冷却电子仪表室. 这种新的结构降低了组件温度,理论模型和热实验验证了这一点.
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
- 热管理 热管理
背景情况:
- 仪表室中的电子设备故障是高速飞行期间由于空气动力学加热而造成的关键问题.
- 现有的冷却解决方案可能不足,或增加过重和复杂性.
研究的目的:
- 提出和研究一种使用相变材料 (PCM) 进行增强热管理的新型仪表室结构.
- 开发和验证基于PCM的结构中传热的理论模型.
- 通过实验验证PCM结构在降低内部温度方面的有效性.
主要方法:
- 使用Lightfoot积分方程方法构建一维相变热传递理论模型.
- 开发用于传热模型的分析解决方案.
- 进行热实验,以测量基于PCM的仪表室结构中的温度变化.
主要成果:
- 基于PCM的仪表室结构显示,与传统的合金结构相比,其自身温度显著降低.
- 实验数据与理论模型的预测密切匹配,证实了它的准确性.
- 该研究验证了PCM在航空航天环境中的热控制的实际应用.
结论:
- 拟议的相变材料仪表室结构为减轻空气动力加热提供了有效的解决方案.
- 经过验证的理论模型为设计和优化基于PCM的热管理系统提供了可靠的基础.
- 这项研究支持在航空航天应用中更广泛地采用相变材料,以提高电子可靠性.
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