传热结构自适应成长法的敏度过滤技术研究
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Sensitivity Filtering Technique of the Adaptive Growth Method for Heat Transfer Structures
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    摘要:

    基于自然界分支系统机理的自适应成长法能获得结构简单且传热效果好的设计结果,该方法在复杂热边界条件下得到的传热通道布局中存在一定数量的平行通道。针对这一问题,提出了一种两层顺序优化的生长新策略。第一层优化采用加入敏度过滤的自适应成长法,优化迭代所得的结果作为第二层优化的初始解;第二层优化采用无过滤的成长法继续生长直至结果收敛。研究结果表明,该方法得到的设计结果不仅拓扑形态简单清晰,平行通道大幅减少,且热性能进一步改善。此外,加入考虑密度梯度信息的敏度过滤法获得的设计结果最好。

    Abstract:

    The adaptive growth method for heat transfer structures which emulates the natural branch systems provides simpler and more effective results. However, parallel channels can not be avoided in the method under the complex boundary conditions. To solve this disadvantage, a new strategy was suggested, which includes two sequential steps. In the first step, the method was applied with the sensitivity filtering technique and the result of the step was adopted as an initial design for the second step. In the second step, the method was applied without the sensitivity filtering technique. The research shows that the topology configurations achieved by the suggested strategy are clear with few parallel channels and the heat performances are improved. What's more, the results obtained with the density gradient filtering technique are the best.

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季懿栋,丁晓红.传热结构自适应成长法的敏度过滤技术研究[J].上海理工大学学报,2019,41(1):36-45.

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  • 收稿日期:2017-12-13
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  • 在线发布日期: 2019-03-20