| 张磊,刘然,刘敏.蜂窝流道热沉强化传热数值模拟[J].装备环境工程,2013,10(4):121-125. ZHANG Lei,LIU Ran,LIU Min.Numerical Simulation of Heat Transfer Enhancement in Honeycomb Shroud[J].Equipment Environmental Engineering,2013,10(4):121-125. |
| 蜂窝流道热沉强化传热数值模拟 |
| Numerical Simulation of Heat Transfer Enhancement in Honeycomb Shroud |
| 投稿时间：2013-02-21 修订日期：2013-07-01 |
| DOI：10.7643/issn.1672-9242.2013.04.029 |
| 中文关键词: 热沉 强化换热 蜂窝结构 优化 |
| 英文关键词:shroud heat exchange enhancement honeycomb structure optimization |
| 基金项目:中国空间技术研究院自主研发项目（YY-BZ(WM)-2012-04） |
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| 中文摘要: |
| 热沉是模拟太空深冷环境的核心部件。为提高空间深冷环境的模拟效果，更好地满足型号试验需求，设计了一种蜂窝流道热沉。利用流体力学理论和有限元方法对蜂窝热沉内部流体的流动和强化传热进行数值模拟，分析流道结构参数对流体流动和换热的影响，确定最优的流道结构参数。结果表明，同等条件下蜂窝热沉表面温度低于管板式热沉5K左右，温度均匀性可达到±2K；流道深度和间距是影响流体在热沉中流动与传热的重要因素，合理选择流道结构参数可以提高热沉的换热性能；需要综合考虑传热和阻力问题来确定最优的流道结构参数，最优的蜂窝热沉流道间距为75mm，深度为10mm。 |
| 英文摘要: |
| Shroud is an important part of space environment simulator. A new type of shroud with honeycomb flow passages was designed for improving the simulation of cold black space environment and satisfying the needs of spacecraft tests. A numerical simulation of inside flow and heat transfer of honeycomb shroud was done by using the theory of hydrodynamics and finite-element method, for analyzing the effect on fluid flow and heat transfer when changing the design value of flow passage to confirm the best design value. Test results showed that the surface temperature of honeycomb flow passage thermal shroud is5K lower than finned pipe thermal shroud and the temperature evenness is ±2K; the deepness and space length of flow passage are important factors effecting the fluid flow and heat transfer in thermal shroud; the best design value of honeycomb flow passage thermal shroud is that space length75mm and deepness10mm by considering the heat transfer and resistance pressure. |
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