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| Gradient optimization of metal cellular material as thermal conductivity enhancer for phase-change temperature control |
| Received:August 20, 2018 Revised:November 12, 2018 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7511/jslx20180820002 |
| KeyWord:gradient design phase change metal cellular material temperature control optimization |
| Author | Institution |
| 王佳优 |
大连理工大学 工业装备结构分析国家重点实验室, 大连 |
| 马广朋 |
大连理工大学 工业装备结构分析国家重点实验室, 大连 |
| 康帅帅 |
大连理工大学 工业装备结构分析国家重点实验室, 大连 |
| 张永存 |
大连理工大学 工业装备结构分析国家重点实验室, 大连 |
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| Abstract: |
| Metal cellular materials with high porosity is an ideal thermal conductivity enhancer because of their large specific surface area,high thermal conductivity,and strong mixing ability.Additive manufacturing is able to fabricate cellular materials with defined complex mesostructures including the gradient cellular structure.In this study,the gradient optimization model of cellular materials as a thermal conductivity enhancer for the phase-change temperature control is proposed.In the optimization model,the porosity is regarded as a design variable,the amount of the cellular consumed is considered as the constraint,and the minimum temperature at the key position is the design goal.The numerical method based on the two-equation model of cellular media considering phase-change is employed here and the optimization model is solved by the genetic algorithm.The effectiveness of the analytical model is verified by the comparison with the experimental results.Two special examples demonstrate that the enhanced performance of phase-change temperature control can be achieved by the gradient design of a metal cellular material as a thermal conductivity enhancer. |
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