对仿生叶脉裂翅热交换机的热传递特性进行数值模拟
Ruixiang Wang1,2, Yijie Hou1, Haichao Yu1
1School of Environment and Energy Engineering, Beijing University of Civil Engineering and Architecture, Beijing, 100044, China.
Scientific reports
|January 21, 2026
概括
生物灵感的叶脉碎片通过优化热传输而提高换热器性能,而不会增加显著的热阻. 最佳设计显示,传热系数得到了51.6%的改善.
科学领域:
- 热传递增强 热传递增强
- 生物模拟设计的设计
- 流体动力学 流体动力学
背景情况:
- 灵感来自大自然的设计,特别是叶子静脉结构,提供高效的营养物质运输.
- 这些自然原理符合有效的热交换机设计的要求.
研究的目的:
- 为了将叶脉结构集成到换热器上.
- 为了提高传热性能,同时最大限度地减少额外的热阻.
主要方法:
- 对空气侧流体流动的3D稳定状态数学模型的开发.
- 在不同的条件下模拟叶脉碎.
主要成果:
- 分析碎形分支角度,间距和雷诺兹数 (500-2500) 效应.
- 对空气侧传热系数和压力下降的影响量化.
结论:
- 最佳的叶状静脉折叠设计,以特定的分支角度和静脉宽度确定.
- 在Re=575.5的热传递系数中实现了51.6%的增强.
- 证明了流场均性和传热性能的改进.
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